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mm, treewide: rename kzfree() to kfree_sensitive()

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As said by Linus:

  A symmetric naming is only helpful if it implies symmetries in use.
  Otherwise it's actively misleading.

  In "kzalloc()", the z is meaningful and an important part of what the
  caller wants.

  In "kzfree()", the z is actively detrimental, because maybe in the
  future we really _might_ want to use that "memfill(0xdeadbeef)" or
  something. The "zero" part of the interface isn't even _relevant_.

The main reason that kzfree() exists is to clear sensitive information
that should not be leaked to other future users of the same memory
objects.

Rename kzfree() to kfree_sensitive() to follow the example of the recently
added kvfree_sensitive() and make the intention of the API more explicit.
In addition, memzero_explicit() is used to clear the memory to make sure
that it won't get optimized away by the compiler.

The renaming is done by using the command sequence:

  git grep -w --name-only kzfree |\
  xargs sed -i 's/kzfree/kfree_sensitive/'

followed by some editing of the kfree_sensitive() kerneldoc and adding
a kzfree backward compatibility macro in slab.h.

[akpm@linux-foundation.org: fs/crypto/inline_crypt.c needs linux/slab.h]
[akpm@linux-foundation.org: fix fs/crypto/inline_crypt.c some more]

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: David Howells <dhowells@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Cc: James Morris <jmorris@namei.org>
Cc: "Serge E. Hallyn" <serge@hallyn.com>
Cc: Joe Perches <joe@perches.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: "Jason A . Donenfeld" <Jason@zx2c4.com>
Link: http://lkml.kernel.org/r/20200616154311.12314-3-longman@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Waiman Long 2020-08-06 23:18:13 -07:00 committed by Linus Torvalds
parent 57c720d414
commit 453431a549
114 changed files with 323 additions and 320 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/s390/crypto/prng.c
View File

@ -249,7 +249,7 @@ static void prng_tdes_deinstantiate(void)
{
pr_debug("The prng module stopped "
"after running in triple DES mode\n");
kzfree(prng_data);
kfree_sensitive(prng_data);
}
@ -442,7 +442,7 @@ outfree:
static void prng_sha512_deinstantiate(void)
{
pr_debug("The prng module stopped after running in SHA-512 mode\n");
kzfree(prng_data);
kfree_sensitive(prng_data);
}

2
arch/x86/power/hibernate.c
View File

@ -98,7 +98,7 @@ static int get_e820_md5(struct e820_table *table, void *buf)
if (crypto_shash_digest(desc, (u8 *)table, size, buf))
ret = -EINVAL;
kzfree(desc);
kfree_sensitive(desc);
free_tfm:
crypto_free_shash(tfm);

2
crypto/adiantum.c
View File

@ -177,7 +177,7 @@ static int adiantum_setkey(struct crypto_skcipher *tfm, const u8 *key,
keyp += NHPOLY1305_KEY_SIZE;
WARN_ON(keyp != &data->derived_keys[ARRAY_SIZE(data->derived_keys)]);
out:
kzfree(data);
kfree_sensitive(data);
return err;
}

4
crypto/ahash.c
View File

@ -183,7 +183,7 @@ static int ahash_setkey_unaligned(struct crypto_ahash *tfm, const u8 *key,
alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
memcpy(alignbuffer, key, keylen);
ret = tfm->setkey(tfm, alignbuffer, keylen);
kzfree(buffer);
kfree_sensitive(buffer);
return ret;
}
@ -302,7 +302,7 @@ static void ahash_restore_req(struct ahash_request *req, int err)
req->priv = NULL;
/* Free the req->priv.priv from the ADJUSTED request. */
kzfree(priv);
kfree_sensitive(priv);
}
static void ahash_notify_einprogress(struct ahash_request *req)

2
crypto/api.c
View File

@ -571,7 +571,7 @@ void crypto_destroy_tfm(void *mem, struct crypto_tfm *tfm)
alg->cra_exit(tfm);
crypto_exit_ops(tfm);
crypto_mod_put(alg);
kzfree(mem);
kfree_sensitive(mem);
}
EXPORT_SYMBOL_GPL(crypto_destroy_tfm);

4
crypto/asymmetric_keys/verify_pefile.c
View File

@ -376,7 +376,7 @@ static int pefile_digest_pe(const void *pebuf, unsigned int pelen,
}
error:
kzfree(desc);
kfree_sensitive(desc);
error_no_desc:
crypto_free_shash(tfm);
kleave(" = %d", ret);
@ -447,6 +447,6 @@ int verify_pefile_signature(const void *pebuf, unsigned pelen,
ret = pefile_digest_pe(pebuf, pelen, &ctx);
error:
kzfree(ctx.digest);
kfree_sensitive(ctx.digest);
return ret;
}

2
crypto/deflate.c
View File

@ -163,7 +163,7 @@ static void __deflate_exit(void *ctx)
static void deflate_free_ctx(struct crypto_scomp *tfm, void *ctx)
{
__deflate_exit(ctx);
kzfree(ctx);
kfree_sensitive(ctx);
}
static void deflate_exit(struct crypto_tfm *tfm)

10
crypto/drbg.c
View File

@ -1218,19 +1218,19 @@ static inline void drbg_dealloc_state(struct drbg_state *drbg)
{
if (!drbg)
return;
kzfree(drbg->Vbuf);
kfree_sensitive(drbg->Vbuf);
drbg->Vbuf = NULL;
drbg->V = NULL;
kzfree(drbg->Cbuf);
kfree_sensitive(drbg->Cbuf);
drbg->Cbuf = NULL;
drbg->C = NULL;
kzfree(drbg->scratchpadbuf);
kfree_sensitive(drbg->scratchpadbuf);
drbg->scratchpadbuf = NULL;
drbg->reseed_ctr = 0;
drbg->d_ops = NULL;
drbg->core = NULL;
if (IS_ENABLED(CONFIG_CRYPTO_FIPS)) {
kzfree(drbg->prev);
kfree_sensitive(drbg->prev);
drbg->prev = NULL;
drbg->fips_primed = false;
}
@ -1701,7 +1701,7 @@ static int drbg_fini_hash_kernel(struct drbg_state *drbg)
struct sdesc *sdesc = (struct sdesc *)drbg->priv_data;
if (sdesc) {
crypto_free_shash(sdesc->shash.tfm);
kzfree(sdesc);
kfree_sensitive(sdesc);
}
drbg->priv_data = NULL;
return 0;

8
crypto/ecc.c
View File

@ -67,7 +67,7 @@ static u64 *ecc_alloc_digits_space(unsigned int ndigits)
static void ecc_free_digits_space(u64 *space)
{
kzfree(space);
kfree_sensitive(space);
}
static struct ecc_point *ecc_alloc_point(unsigned int ndigits)
@ -101,9 +101,9 @@ static void ecc_free_point(struct ecc_point *p)
if (!p)
return;
kzfree(p->x);
kzfree(p->y);
kzfree(p);
kfree_sensitive(p->x);
kfree_sensitive(p->y);
kfree_sensitive(p);
}
static void vli_clear(u64 *vli, unsigned int ndigits)

2
crypto/ecdh.c
View File

@ -124,7 +124,7 @@ static int ecdh_compute_value(struct kpp_request *req)
/* fall through */
free_all:
kzfree(shared_secret);
kfree_sensitive(shared_secret);
free_pubkey:
kfree(public_key);
return ret;

2
crypto/gcm.c
View File

@ -139,7 +139,7 @@ static int crypto_gcm_setkey(struct crypto_aead *aead, const u8 *key,
CRYPTO_TFM_REQ_MASK);
err = crypto_ahash_setkey(ghash, (u8 *)&data->hash, sizeof(be128));
out:
kzfree(data);
kfree_sensitive(data);
return err;
}

4
crypto/gf128mul.c
View File

@ -304,8 +304,8 @@ void gf128mul_free_64k(struct gf128mul_64k *t)
int i;
for (i = 0; i < 16; i++)
kzfree(t->t[i]);
kzfree(t);
kfree_sensitive(t->t[i]);
kfree_sensitive(t);
}
EXPORT_SYMBOL(gf128mul_free_64k);

2
crypto/jitterentropy-kcapi.c
View File

@ -57,7 +57,7 @@ void *jent_zalloc(unsigned int len)
void jent_zfree(void *ptr)
{
kzfree(ptr);
kfree_sensitive(ptr);
}
int jent_fips_enabled(void)

2
crypto/rng.c
View File

@ -53,7 +53,7 @@ int crypto_rng_reset(struct crypto_rng *tfm, const u8 *seed, unsigned int slen)
err = crypto_rng_alg(tfm)->seed(tfm, seed, slen);
crypto_stats_rng_seed(alg, err);
out:
kzfree(buf);
kfree_sensitive(buf);
return err;
}
EXPORT_SYMBOL_GPL(crypto_rng_reset);

6
crypto/rsa-pkcs1pad.c
View File

@ -199,7 +199,7 @@ static int pkcs1pad_encrypt_sign_complete(struct akcipher_request *req, int err)
sg_copy_from_buffer(req->dst,
sg_nents_for_len(req->dst, ctx->key_size),
out_buf, ctx->key_size);
kzfree(out_buf);
kfree_sensitive(out_buf);
out:
req->dst_len = ctx->key_size;
@ -322,7 +322,7 @@ static int pkcs1pad_decrypt_complete(struct akcipher_request *req, int err)
out_buf + pos, req->dst_len);
done:
kzfree(req_ctx->out_buf);
kfree_sensitive(req_ctx->out_buf);
return err;
}
@ -500,7 +500,7 @@ static int pkcs1pad_verify_complete(struct akcipher_request *req, int err)
req->dst_len) != 0)
err = -EKEYREJECTED;
done:
kzfree(req_ctx->out_buf);
kfree_sensitive(req_ctx->out_buf);
return err;
}

2
crypto/seqiv.c
View File

@ -33,7 +33,7 @@ static void seqiv_aead_encrypt_complete2(struct aead_request *req, int err)
memcpy(req->iv, subreq->iv, crypto_aead_ivsize(geniv));
out:
kzfree(subreq->iv);
kfree_sensitive(subreq->iv);
}
static void seqiv_aead_encrypt_complete(struct crypto_async_request *base,

2
crypto/shash.c
View File

@ -44,7 +44,7 @@ static int shash_setkey_unaligned(struct crypto_shash *tfm, const u8 *key,
alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
memcpy(alignbuffer, key, keylen);
err = shash->setkey(tfm, alignbuffer, keylen);
kzfree(buffer);
kfree_sensitive(buffer);
return err;
}

2
crypto/skcipher.c
View File

@ -592,7 +592,7 @@ static int skcipher_setkey_unaligned(struct crypto_skcipher *tfm,
alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
memcpy(alignbuffer, key, keylen);
ret = cipher->setkey(tfm, alignbuffer, keylen);
kzfree(buffer);
kfree_sensitive(buffer);
return ret;
}

6
crypto/testmgr.c
View File

@ -1744,7 +1744,7 @@ out:
kfree(vec.plaintext);
kfree(vec.digest);
crypto_free_shash(generic_tfm);
kzfree(generic_desc);
kfree_sensitive(generic_desc);
return err;
}
#else /* !CONFIG_CRYPTO_MANAGER_EXTRA_TESTS */
@ -3665,7 +3665,7 @@ static int drbg_cavs_test(const struct drbg_testvec *test, int pr,
if (IS_ERR(drng)) {
printk(KERN_ERR "alg: drbg: could not allocate DRNG handle for "
"%s\n", driver);
kzfree(buf);
kfree_sensitive(buf);
return -ENOMEM;
}
@ -3712,7 +3712,7 @@ static int drbg_cavs_test(const struct drbg_testvec *test, int pr,
outbuf:
crypto_free_rng(drng);
kzfree(buf);
kfree_sensitive(buf);
return ret;
}

2
crypto/zstd.c
View File

@ -137,7 +137,7 @@ static void __zstd_exit(void *ctx)
static void zstd_free_ctx(struct crypto_scomp *tfm, void *ctx)
{
__zstd_exit(ctx);
kzfree(ctx);
kfree_sensitive(ctx);
}
static void zstd_exit(struct crypto_tfm *tfm)

2
drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
View File

@ -254,7 +254,7 @@ theend_iv:
offset = areq->cryptlen - ivsize;
if (rctx->op_dir & CE_DECRYPTION) {
memcpy(areq->iv, backup_iv, ivsize);
kzfree(backup_iv);
kfree_sensitive(backup_iv);
} else {
scatterwalk_map_and_copy(areq->iv, areq->dst, offset,
ivsize, 0);

2
drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
View File

@ -249,7 +249,7 @@ theend_iv:
if (rctx->op_dir & SS_DECRYPTION) {
memcpy(areq->iv, backup_iv, ivsize);
memzero_explicit(backup_iv, ivsize);
kzfree(backup_iv);
kfree_sensitive(backup_iv);
} else {
scatterwalk_map_and_copy(areq->iv, areq->dst, offset,
ivsize, 0);

4
drivers/crypto/amlogic/amlogic-gxl-cipher.c
View File

@ -252,8 +252,8 @@ static int meson_cipher(struct skcipher_request *areq)
}
}
theend:
kzfree(bkeyiv);
kzfree(backup_iv);
kfree_sensitive(bkeyiv);
kfree_sensitive(backup_iv);
return err;
}

2
drivers/crypto/atmel-ecc.c
View File

@ -69,7 +69,7 @@ static void atmel_ecdh_done(struct atmel_i2c_work_data *work_data, void *areq,
/* fall through */
free_work_data:
kzfree(work_data);
kfree_sensitive(work_data);
kpp_request_complete(req, status);
}

28
drivers/crypto/caam/caampkc.c
View File

@ -854,14 +854,14 @@ static int caam_rsa_dec(struct akcipher_request *req)
static void caam_rsa_free_key(struct caam_rsa_key *key)
{
kzfree(key->d);
kzfree(key->p);
kzfree(key->q);
kzfree(key->dp);
kzfree(key->dq);
kzfree(key->qinv);
kzfree(key->tmp1);
kzfree(key->tmp2);
kfree_sensitive(key->d);
kfree_sensitive(key->p);
kfree_sensitive(key->q);
kfree_sensitive(key->dp);
kfree_sensitive(key->dq);
kfree_sensitive(key->qinv);
kfree_sensitive(key->tmp1);
kfree_sensitive(key->tmp2);
kfree(key->e);
kfree(key->n);
memset(key, 0, sizeof(*key));
@ -1018,17 +1018,17 @@ static void caam_rsa_set_priv_key_form(struct caam_rsa_ctx *ctx,
return;
free_dq:
kzfree(rsa_key->dq);
kfree_sensitive(rsa_key->dq);
free_dp:
kzfree(rsa_key->dp);
kfree_sensitive(rsa_key->dp);
free_tmp2:
kzfree(rsa_key->tmp2);
kfree_sensitive(rsa_key->tmp2);
free_tmp1:
kzfree(rsa_key->tmp1);
kfree_sensitive(rsa_key->tmp1);
free_q:
kzfree(rsa_key->q);
kfree_sensitive(rsa_key->q);
free_p:
kzfree(rsa_key->p);
kfree_sensitive(rsa_key->p);
}
static int caam_rsa_set_priv_key(struct crypto_akcipher *tfm, const void *key,

6
drivers/crypto/cavium/cpt/cptvf_main.c
View File

@ -74,7 +74,7 @@ static void cleanup_worker_threads(struct cpt_vf *cptvf)
for (i = 0; i < cptvf->nr_queues; i++)
tasklet_kill(&cwqe_info->vq_wqe[i].twork);
kzfree(cwqe_info);
kfree_sensitive(cwqe_info);
cptvf->wqe_info = NULL;
}
@ -88,7 +88,7 @@ static void free_pending_queues(struct pending_qinfo *pqinfo)
continue;
/* free single queue */
kzfree((queue->head));
kfree_sensitive((queue->head));
queue->front = 0;
queue->rear = 0;
@ -189,7 +189,7 @@ static void free_command_queues(struct cpt_vf *cptvf,
chunk->head = NULL;
chunk->dma_addr = 0;
hlist_del(&chunk->nextchunk);
kzfree(chunk);
kfree_sensitive(chunk);
}
queue->nchunks = 0;

12
drivers/crypto/cavium/cpt/cptvf_reqmanager.c
View File

@ -305,12 +305,12 @@ static void do_request_cleanup(struct cpt_vf *cptvf,
}
}
kzfree(info->scatter_components);
kzfree(info->gather_components);
kzfree(info->out_buffer);
kzfree(info->in_buffer);
kzfree((void *)info->completion_addr);
kzfree(info);
kfree_sensitive(info->scatter_components);
kfree_sensitive(info->gather_components);
kfree_sensitive(info->out_buffer);
kfree_sensitive(info->in_buffer);
kfree_sensitive((void *)info->completion_addr);
kfree_sensitive(info);
}
static void do_post_process(struct cpt_vf *cptvf, struct cpt_info_buffer *info)

4
drivers/crypto/cavium/nitrox/nitrox_lib.c
View File

@ -90,7 +90,7 @@ static void nitrox_free_aqm_queues(struct nitrox_device *ndev)
for (i = 0; i < ndev->nr_queues; i++) {
nitrox_cmdq_cleanup(ndev->aqmq[i]);
kzfree(ndev->aqmq[i]);
kfree_sensitive(ndev->aqmq[i]);
ndev->aqmq[i] = NULL;
}
}
@ -122,7 +122,7 @@ static int nitrox_alloc_aqm_queues(struct nitrox_device *ndev)
err = nitrox_cmdq_init(cmdq, AQM_Q_ALIGN_BYTES);
if (err) {
kzfree(cmdq);
kfree_sensitive(cmdq);
goto aqmq_fail;
}
ndev->aqmq[i] = cmdq;

6
drivers/crypto/cavium/zip/zip_crypto.c
View File

@ -260,7 +260,7 @@ void *zip_alloc_scomp_ctx_deflate(struct crypto_scomp *tfm)
ret = zip_ctx_init(zip_ctx, 0);
if (ret) {
kzfree(zip_ctx);
kfree_sensitive(zip_ctx);
return ERR_PTR(ret);
}
@ -279,7 +279,7 @@ void *zip_alloc_scomp_ctx_lzs(struct crypto_scomp *tfm)
ret = zip_ctx_init(zip_ctx, 1);
if (ret) {
kzfree(zip_ctx);
kfree_sensitive(zip_ctx);
return ERR_PTR(ret);
}
@ -291,7 +291,7 @@ void zip_free_scomp_ctx(struct crypto_scomp *tfm, void *ctx)
struct zip_kernel_ctx *zip_ctx = ctx;
zip_ctx_exit(zip_ctx);
kzfree(zip_ctx);
kfree_sensitive(zip_ctx);
}
int zip_scomp_compress(struct crypto_scomp *tfm,

6
drivers/crypto/ccp/ccp-crypto-rsa.c
View File

@ -112,13 +112,13 @@ static int ccp_check_key_length(unsigned int len)
static void ccp_rsa_free_key_bufs(struct ccp_ctx *ctx)
{
/* Clean up old key data */
kzfree(ctx->u.rsa.e_buf);
kfree_sensitive(ctx->u.rsa.e_buf);
ctx->u.rsa.e_buf = NULL;
ctx->u.rsa.e_len = 0;
kzfree(ctx->u.rsa.n_buf);
kfree_sensitive(ctx->u.rsa.n_buf);
ctx->u.rsa.n_buf = NULL;
ctx->u.rsa.n_len = 0;
kzfree(ctx->u.rsa.d_buf);
kfree_sensitive(ctx->u.rsa.d_buf);
ctx->u.rsa.d_buf = NULL;
ctx->u.rsa.d_len = 0;
}

4
drivers/crypto/ccree/cc_aead.c
View File

@ -448,7 +448,7 @@ static int cc_get_plain_hmac_key(struct crypto_aead *tfm, const u8 *authkey,
if (dma_mapping_error(dev, key_dma_addr)) {
dev_err(dev, "Mapping key va=0x%p len=%u for DMA failed\n",
key, keylen);
kzfree(key);
kfree_sensitive(key);
return -ENOMEM;
}
if (keylen > blocksize) {
@ -533,7 +533,7 @@ static int cc_get_plain_hmac_key(struct crypto_aead *tfm, const u8 *authkey,
if (key_dma_addr)
dma_unmap_single(dev, key_dma_addr, keylen, DMA_TO_DEVICE);
kzfree(key);
kfree_sensitive(key);
return rc;
}

4
drivers/crypto/ccree/cc_buffer_mgr.c
View File

@ -488,7 +488,7 @@ void cc_unmap_aead_request(struct device *dev, struct aead_request *req)
if (areq_ctx->gen_ctx.iv_dma_addr) {
dma_unmap_single(dev, areq_ctx->gen_ctx.iv_dma_addr,
hw_iv_size, DMA_BIDIRECTIONAL);
kzfree(areq_ctx->gen_ctx.iv);
kfree_sensitive(areq_ctx->gen_ctx.iv);
}
/* Release pool */
@ -559,7 +559,7 @@ static int cc_aead_chain_iv(struct cc_drvdata *drvdata,
if (dma_mapping_error(dev, areq_ctx->gen_ctx.iv_dma_addr)) {
dev_err(dev, "Mapping iv %u B at va=%pK for DMA failed\n",
hw_iv_size, req->iv);
kzfree(areq_ctx->gen_ctx.iv);
kfree_sensitive(areq_ctx->gen_ctx.iv);
areq_ctx->gen_ctx.iv = NULL;
rc = -ENOMEM;
goto chain_iv_exit;

6
drivers/crypto/ccree/cc_cipher.c
View File

@ -257,7 +257,7 @@ static void cc_cipher_exit(struct crypto_tfm *tfm)
&ctx_p->user.key_dma_addr);
/* Free key buffer in context */
kzfree(ctx_p->user.key);
kfree_sensitive(ctx_p->user.key);
dev_dbg(dev, "Free key buffer in context. key=@%p\n", ctx_p->user.key);
}
@ -881,7 +881,7 @@ static void cc_cipher_complete(struct device *dev, void *cc_req, int err)
/* Not a BACKLOG notification */
cc_unmap_cipher_request(dev, req_ctx, ivsize, src, dst);
memcpy(req->iv, req_ctx->iv, ivsize);
kzfree(req_ctx->iv);
kfree_sensitive(req_ctx->iv);
}
skcipher_request_complete(req, err);
@ -994,7 +994,7 @@ static int cc_cipher_process(struct skcipher_request *req,
exit_process:
if (rc != -EINPROGRESS && rc != -EBUSY) {
kzfree(req_ctx->iv);
kfree_sensitive(req_ctx->iv);
}
return rc;

8
drivers/crypto/ccree/cc_hash.c
View File

@ -764,7 +764,7 @@ static int cc_hash_setkey(struct crypto_ahash *ahash, const u8 *key,
if (dma_mapping_error(dev, ctx->key_params.key_dma_addr)) {
dev_err(dev, "Mapping key va=0x%p len=%u for DMA failed\n",
ctx->key_params.key, keylen);
kzfree(ctx->key_params.key);
kfree_sensitive(ctx->key_params.key);
return -ENOMEM;
}
dev_dbg(dev, "mapping key-buffer: key_dma_addr=%pad keylen=%u\n",
@ -913,7 +913,7 @@ out:
&ctx->key_params.key_dma_addr, ctx->key_params.keylen);
}
kzfree(ctx->key_params.key);
kfree_sensitive(ctx->key_params.key);
return rc;
}
@ -950,7 +950,7 @@ static int cc_xcbc_setkey(struct crypto_ahash *ahash,
if (dma_mapping_error(dev, ctx->key_params.key_dma_addr)) {
dev_err(dev, "Mapping key va=0x%p len=%u for DMA failed\n",
key, keylen);
kzfree(ctx->key_params.key);
kfree_sensitive(ctx->key_params.key);
return -ENOMEM;
}
dev_dbg(dev, "mapping key-buffer: key_dma_addr=%pad keylen=%u\n",
@ -999,7 +999,7 @@ static int cc_xcbc_setkey(struct crypto_ahash *ahash,
dev_dbg(dev, "Unmapped key-buffer: key_dma_addr=%pad keylen=%u\n",
&ctx->key_params.key_dma_addr, ctx->key_params.keylen);
kzfree(ctx->key_params.key);
kfree_sensitive(ctx->key_params.key);
return rc;
}

2
drivers/crypto/ccree/cc_request_mgr.c
View File

@ -107,7 +107,7 @@ void cc_req_mgr_fini(struct cc_drvdata *drvdata)
/* Kill tasklet */
tasklet_kill(&req_mgr_h->comptask);
#endif
kzfree(req_mgr_h);
kfree_sensitive(req_mgr_h);
drvdata->request_mgr_handle = NULL;
}

2
drivers/crypto/marvell/cesa/hash.c
View File

@ -1157,7 +1157,7 @@ static int mv_cesa_ahmac_pad_init(struct ahash_request *req,
}
/* Set the memory region to 0 to avoid any leak. */
kzfree(keydup);
kfree_sensitive(keydup);
if (ret)
return ret;

6
drivers/crypto/marvell/octeontx/otx_cptvf_main.c
View File

@ -68,7 +68,7 @@ static void cleanup_worker_threads(struct otx_cptvf *cptvf)
for (i = 0; i < cptvf->num_queues; i++)
tasklet_kill(&cwqe_info->vq_wqe[i].twork);
kzfree(cwqe_info);
kfree_sensitive(cwqe_info);
cptvf->wqe_info = NULL;
}
@ -82,7 +82,7 @@ static void free_pending_queues(struct otx_cpt_pending_qinfo *pqinfo)
continue;
/* free single queue */
kzfree((queue->head));
kfree_sensitive((queue->head));
queue->front = 0;
queue->rear = 0;
queue->qlen = 0;
@ -176,7 +176,7 @@ static void free_command_queues(struct otx_cptvf *cptvf,
chunk->head = NULL;
chunk->dma_addr = 0;
list_del(&chunk->nextchunk);
kzfree(chunk);
kfree_sensitive(chunk);
}
queue->num_chunks = 0;
queue->idx = 0;

2
drivers/crypto/marvell/octeontx/otx_cptvf_reqmgr.h
View File

@ -215,7 +215,7 @@ static inline void do_request_cleanup(struct pci_dev *pdev,
DMA_BIDIRECTIONAL);
}
}
kzfree(info);
kfree_sensitive(info);
}
struct otx_cptvf_wqe;

4
drivers/crypto/nx/nx.c
View File

@ -746,7 +746,7 @@ void nx_crypto_ctx_exit(struct crypto_tfm *tfm)
{
struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(tfm);
kzfree(nx_ctx->kmem);
kfree_sensitive(nx_ctx->kmem);
nx_ctx->csbcpb = NULL;
nx_ctx->csbcpb_aead = NULL;
nx_ctx->in_sg = NULL;
@ -762,7 +762,7 @@ void nx_crypto_ctx_aead_exit(struct crypto_aead *tfm)
{
struct nx_crypto_ctx *nx_ctx = crypto_aead_ctx(tfm);
kzfree(nx_ctx->kmem);
kfree_sensitive(nx_ctx->kmem);
}
static int nx_probe(struct vio_dev *viodev, const struct vio_device_id *id)

12
drivers/crypto/virtio/virtio_crypto_algs.c
View File

@ -167,7 +167,7 @@ static int virtio_crypto_alg_skcipher_init_session(
num_in, vcrypto, GFP_ATOMIC);
if (err < 0) {
spin_unlock(&vcrypto->ctrl_lock);
kzfree(cipher_key);
kfree_sensitive(cipher_key);
return err;
}
virtqueue_kick(vcrypto->ctrl_vq);
@ -184,7 +184,7 @@ static int virtio_crypto_alg_skcipher_init_session(
spin_unlock(&vcrypto->ctrl_lock);
pr_err("virtio_crypto: Create session failed status: %u\n",
le32_to_cpu(vcrypto->input.status));
kzfree(cipher_key);
kfree_sensitive(cipher_key);
return -EINVAL;
}
@ -197,7 +197,7 @@ static int virtio_crypto_alg_skcipher_init_session(
spin_unlock(&vcrypto->ctrl_lock);
kzfree(cipher_key);
kfree_sensitive(cipher_key);
return 0;
}
@ -472,9 +472,9 @@ __virtio_crypto_skcipher_do_req(struct virtio_crypto_sym_request *vc_sym_req,
return 0;
free_iv:
kzfree(iv);
kfree_sensitive(iv);
free:
kzfree(req_data);
kfree_sensitive(req_data);
kfree(sgs);
return err;
}
@ -583,7 +583,7 @@ static void virtio_crypto_skcipher_finalize_req(
scatterwalk_map_and_copy(req->iv, req->dst,
req->cryptlen - AES_BLOCK_SIZE,
AES_BLOCK_SIZE, 0);
kzfree(vc_sym_req->iv);
kfree_sensitive(vc_sym_req->iv);
virtcrypto_clear_request(&vc_sym_req->base);
crypto_finalize_skcipher_request(vc_sym_req->base.dataq->engine,

2
drivers/crypto/virtio/virtio_crypto_core.c
View File

@ -17,7 +17,7 @@ void
virtcrypto_clear_request(struct virtio_crypto_request *vc_req)
{
if (vc_req) {
kzfree(vc_req->req_data);
kfree_sensitive(vc_req->req_data);
kfree(vc_req->sgs);
}
}

32
drivers/md/dm-crypt.c
View File

@ -407,7 +407,7 @@ static void crypt_iv_lmk_dtr(struct crypt_config *cc)
crypto_free_shash(lmk->hash_tfm);
lmk->hash_tfm = NULL;
kzfree(lmk->seed);
kfree_sensitive(lmk->seed);
lmk->seed = NULL;
}
@ -558,9 +558,9 @@ static void crypt_iv_tcw_dtr(struct crypt_config *cc)
{
struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;
kzfree(tcw->iv_seed);
kfree_sensitive(tcw->iv_seed);
tcw->iv_seed = NULL;
kzfree(tcw->whitening);
kfree_sensitive(tcw->whitening);
tcw->whitening = NULL;
if (tcw->crc32_tfm && !IS_ERR(tcw->crc32_tfm))
@ -994,8 +994,8 @@ static int crypt_iv_elephant(struct crypt_config *cc, struct dm_crypt_request *d
kunmap_atomic(data);
out:
kzfree(ks);
kzfree(es);
kfree_sensitive(ks);
kfree_sensitive(es);
skcipher_request_free(req);
return r;
}
@ -2294,7 +2294,7 @@ static int crypt_set_keyring_key(struct crypt_config *cc, const char *key_string
key = request_key(type, key_desc + 1, NULL);
if (IS_ERR(key)) {
kzfree(new_key_string);
kfree_sensitive(new_key_string);
return PTR_ERR(key);
}
@ -2304,7 +2304,7 @@ static int crypt_set_keyring_key(struct crypt_config *cc, const char *key_string
if (ret < 0) {
up_read(&key->sem);
key_put(key);
kzfree(new_key_string);
kfree_sensitive(new_key_string);
return ret;
}
@ -2318,10 +2318,10 @@ static int crypt_set_keyring_key(struct crypt_config *cc, const char *key_string
if (!ret) {
set_bit(DM_CRYPT_KEY_VALID, &cc->flags);
kzfree(cc->key_string);
kfree_sensitive(cc->key_string);
cc->key_string = new_key_string;
} else
kzfree(new_key_string);
kfree_sensitive(new_key_string);
return ret;
}
@ -2382,7 +2382,7 @@ static int crypt_set_key(struct crypt_config *cc, char *key)
clear_bit(DM_CRYPT_KEY_VALID, &cc->flags);
/* wipe references to any kernel keyring key */
kzfree(cc->key_string);
kfree_sensitive(cc->key_string);
cc->key_string = NULL;
/* Decode key from its hex representation. */
@ -2414,7 +2414,7 @@ static int crypt_wipe_key(struct crypt_config *cc)
return r;
}
kzfree(cc->key_string);
kfree_sensitive(cc->key_string);
cc->key_string = NULL;
r = crypt_setkey(cc);
memset(&cc->key, 0, cc->key_size * sizeof(u8));
@ -2493,15 +2493,15 @@ static void crypt_dtr(struct dm_target *ti)
if (cc->dev)
dm_put_device(ti, cc->dev);
kzfree(cc->cipher_string);
kzfree(cc->key_string);
kzfree(cc->cipher_auth);
kzfree(cc->authenc_key);
kfree_sensitive(cc->cipher_string);
kfree_sensitive(cc->key_string);
kfree_sensitive(cc->cipher_auth);
kfree_sensitive(cc->authenc_key);
mutex_destroy(&cc->bio_alloc_lock);
/* Must zero key material before freeing */
kzfree(cc);
kfree_sensitive(cc);
spin_lock(&dm_crypt_clients_lock);
WARN_ON(!dm_crypt_clients_n);

6
drivers/md/dm-integrity.c
View File

@ -3405,8 +3405,8 @@ static struct scatterlist **dm_integrity_alloc_journal_scatterlist(struct dm_int
static void free_alg(struct alg_spec *a)
{
kzfree(a->alg_string);
kzfree(a->key);
kfree_sensitive(a->alg_string);
kfree_sensitive(a->key);
memset(a, 0, sizeof *a);
}
@ -4337,7 +4337,7 @@ static void dm_integrity_dtr(struct dm_target *ti)
for (i = 0; i < ic->journal_sections; i++) {
struct skcipher_request *req = ic->sk_requests[i];
if (req) {
kzfree(req->iv);
kfree_sensitive(req->iv);
skcipher_request_free(req);
}
}

6
drivers/misc/ibmvmc.c
View File

@ -286,7 +286,7 @@ static void *alloc_dma_buffer(struct vio_dev *vdev, size_t size,
if (dma_mapping_error(&vdev->dev, *dma_handle)) {
*dma_handle = 0;
kzfree(buffer);
kfree_sensitive(buffer);
return NULL;
}
@ -310,7 +310,7 @@ static void free_dma_buffer(struct vio_dev *vdev, size_t size, void *vaddr,
dma_unmap_single(&vdev->dev, dma_handle, size, DMA_BIDIRECTIONAL);
/* deallocate memory */
kzfree(vaddr);
kfree_sensitive(vaddr);
}
/**
@ -883,7 +883,7 @@ static int ibmvmc_close(struct inode *inode, struct file *file)
spin_unlock_irqrestore(&hmc->lock, flags);
}
kzfree(session);
kfree_sensitive(session);
return rc;
}

2
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
View File

@ -137,7 +137,7 @@ static void hclge_free_vector_ring_chain(struct hnae3_ring_chain_node *head)
while (chain) {
chain_tmp = chain->next;
kzfree(chain);
kfree_sensitive(chain);
chain = chain_tmp;
}
}

6
drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
View File

@ -960,9 +960,9 @@ int ixgbe_ipsec_vf_add_sa(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
return 0;
err_aead:
kzfree(xs->aead);
kfree_sensitive(xs->aead);
err_xs:
kzfree(xs);
kfree_sensitive(xs);
err_out:
msgbuf[1] = err;
return err;
@ -1047,7 +1047,7 @@ int ixgbe_ipsec_vf_del_sa(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
ixgbe_ipsec_del_sa(xs);
/* remove the xs that was made-up in the add request */
kzfree(xs);
kfree_sensitive(xs);
return 0;
}

6
drivers/net/ppp/ppp_mppe.c
View File

@ -222,7 +222,7 @@ out_free:
kfree(state->sha1_digest);
if (state->sha1) {
crypto_free_shash(state->sha1->tfm);
kzfree(state->sha1);
kfree_sensitive(state->sha1);
}
kfree(state);
out:
@ -238,8 +238,8 @@ static void mppe_free(void *arg)
if (state) {
kfree(state->sha1_digest);
crypto_free_shash(state->sha1->tfm);
kzfree(state->sha1);
kzfree(state);
kfree_sensitive(state->sha1);
kfree_sensitive(state);
}
}

4
drivers/net/wireguard/noise.c
View File

@ -114,7 +114,7 @@ static struct noise_keypair *keypair_create(struct wg_peer *peer)
static void keypair_free_rcu(struct rcu_head *rcu)
{
kzfree(container_of(rcu, struct noise_keypair, rcu));
kfree_sensitive(container_of(rcu, struct noise_keypair, rcu));
}
static void keypair_free_kref(struct kref *kref)
@ -821,7 +821,7 @@ bool wg_noise_handshake_begin_session(struct noise_handshake *handshake,
handshake->entry.peer->device->index_hashtable,
&handshake->entry, &new_keypair->entry);
} else {
kzfree(new_keypair);
kfree_sensitive(new_keypair);
}
rcu_read_unlock_bh();

2
drivers/net/wireguard/peer.c
View File

@ -203,7 +203,7 @@ static void rcu_release(struct rcu_head *rcu)
/* The final zeroing takes care of clearing any remaining handshake key
* material and other potentially sensitive information.
*/
kzfree(peer);
kfree_sensitive(peer);
}
static void kref_release(struct kref *refcount)

2
drivers/net/wireless/intel/iwlwifi/pcie/rx.c
View File

@ -1369,7 +1369,7 @@ static void iwl_pcie_rx_handle_rb(struct iwl_trans *trans,
&rxcb, rxq->id);
if (reclaim) {
kzfree(txq->entries[cmd_index].free_buf);
kfree_sensitive(txq->entries[cmd_index].free_buf);
txq->entries[cmd_index].free_buf = NULL;
}

6
drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c
View File

@ -1026,7 +1026,7 @@ static int iwl_pcie_gen2_enqueue_hcmd(struct iwl_trans *trans,
BUILD_BUG_ON(IWL_TFH_NUM_TBS > sizeof(out_meta->tbs) * BITS_PER_BYTE);
out_meta->flags = cmd->flags;
if (WARN_ON_ONCE(txq->entries[idx].free_buf))
kzfree(txq->entries[idx].free_buf);
kfree_sensitive(txq->entries[idx].free_buf);
txq->entries[idx].free_buf = dup_buf;
trace_iwlwifi_dev_hcmd(trans->dev, cmd, cmd_size, &out_cmd->hdr_wide);
@ -1257,8 +1257,8 @@ static void iwl_pcie_gen2_txq_free(struct iwl_trans *trans, int txq_id)
/* De-alloc array of command/tx buffers */
if (txq_id == trans->txqs.cmd.q_id)
for (i = 0; i < txq->n_window; i++) {
kzfree(txq->entries[i].cmd);
kzfree(txq->entries[i].free_buf);
kfree_sensitive(txq->entries[i].cmd);
kfree_sensitive(txq->entries[i].free_buf);
}
del_timer_sync(&txq->stuck_timer);

6
drivers/net/wireless/intel/iwlwifi/pcie/tx.c
View File

@ -721,8 +721,8 @@ static void iwl_pcie_txq_free(struct iwl_trans *trans, int txq_id)
/* De-alloc array of command/tx buffers */
if (txq_id == trans->txqs.cmd.q_id)
for (i = 0; i < txq->n_window; i++) {
kzfree(txq->entries[i].cmd);
kzfree(txq->entries[i].free_buf);
kfree_sensitive(txq->entries[i].cmd);
kfree_sensitive(txq->entries[i].free_buf);
}
/* De-alloc circular buffer of TFDs */
@ -1765,7 +1765,7 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans,
BUILD_BUG_ON(IWL_TFH_NUM_TBS > sizeof(out_meta->tbs) * BITS_PER_BYTE);
out_meta->flags = cmd->flags;
if (WARN_ON_ONCE(txq->entries[idx].free_buf))
kzfree(txq->entries[idx].free_buf);
kfree_sensitive(txq->entries[idx].free_buf);
txq->entries[idx].free_buf = dup_buf;
trace_iwlwifi_dev_hcmd(trans->dev, cmd, cmd_size, &out_cmd->hdr_wide);

4
drivers/net/wireless/intersil/orinoco/wext.c
View File

@ -31,8 +31,8 @@ static int orinoco_set_key(struct orinoco_private *priv, int index,
enum orinoco_alg alg, const u8 *key, int key_len,
const u8 *seq, int seq_len)
{
kzfree(priv->keys[index].key);
kzfree(priv->keys[index].seq);
kfree_sensitive(priv->keys[index].key);
kfree_sensitive(priv->keys[index].seq);
if (key_len) {
priv->keys[index].key = kzalloc(key_len, GFP_ATOMIC);

4
drivers/s390/crypto/ap_bus.h
View File

@ -219,8 +219,8 @@ static inline void ap_init_message(struct ap_message *ap_msg)
*/
static inline void ap_release_message(struct ap_message *ap_msg)
{
kzfree(ap_msg->msg);
kzfree(ap_msg->private);
kfree_sensitive(ap_msg->msg);
kfree_sensitive(ap_msg->private);
}
/*

2
drivers/staging/ks7010/ks_hostif.c
View File

@ -245,7 +245,7 @@ michael_mic(u8 *key, u8 *data, unsigned int len, u8 priority, u8 *result)
ret = crypto_shash_finup(desc, data + 12, len - 12, result);
err_free_desc:
kzfree(desc);
kfree_sensitive(desc);
err_free_tfm:
crypto_free_shash(tfm);

2
drivers/staging/rtl8723bs/core/rtw_security.c
View File

@ -2251,7 +2251,7 @@ static void gf_mulx(u8 *pad)
static void aes_encrypt_deinit(void *ctx)
{
kzfree(ctx);
kfree_sensitive(ctx);
}

2
drivers/staging/wlan-ng/p80211netdev.c
View File

@ -429,7 +429,7 @@ static netdev_tx_t p80211knetdev_hard_start_xmit(struct sk_buff *skb,
failed:
/* Free up the WEP buffer if it's not the same as the skb */
if ((p80211_wep.data) && (p80211_wep.data != skb->data))
kzfree(p80211_wep.data);
kfree_sensitive(p80211_wep.data);
/* we always free the skb here, never in a lower level. */
if (!result)

2
drivers/target/iscsi/iscsi_target_auth.c
View File

@ -484,7 +484,7 @@ static int chap_server_compute_hash(
pr_debug("[server] Sending CHAP_R=0x%s\n", response);
auth_ret = 0;
out:
kzfree(desc);
kfree_sensitive(desc);
if (tfm)
crypto_free_shash(tfm);
kfree(initiatorchg);

2
fs/cifs/cifsencrypt.c
View File

@ -797,7 +797,7 @@ calc_seckey(struct cifs_ses *ses)
ses->auth_key.len = CIFS_SESS_KEY_SIZE;
memzero_explicit(sec_key, CIFS_SESS_KEY_SIZE);
kzfree(ctx_arc4);
kfree_sensitive(ctx_arc4);
return 0;
}

10
fs/cifs/connect.c
View File

@ -2182,7 +2182,7 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
tmp_end++;
if (!(tmp_end < end && tmp_end[1] == delim)) {
/* No it is not. Set the password to NULL */
kzfree(vol->password);
kfree_sensitive(vol->password);
vol->password = NULL;
break;
}
@ -2220,7 +2220,7 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
options = end;
}
kzfree(vol->password);
kfree_sensitive(vol->password);
/* Now build new password string */
temp_len = strlen(value);
vol->password = kzalloc(temp_len+1, GFP_KERNEL);
@ -3198,7 +3198,7 @@ cifs_set_cifscreds(struct smb_vol *vol, struct cifs_ses *ses)
rc = -ENOMEM;
kfree(vol->username);
vol->username = NULL;
kzfree(vol->password);
kfree_sensitive(vol->password);
vol->password = NULL;
goto out_key_put;
}
@ -4219,7 +4219,7 @@ void
cifs_cleanup_volume_info_contents(struct smb_vol *volume_info)
{
kfree(volume_info->username);
kzfree(volume_info->password);
kfree_sensitive(volume_info->password);
kfree(volume_info->UNC);
kfree(volume_info->domainname);
kfree(volume_info->iocharset);
@ -5345,7 +5345,7 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, kuid_t fsuid)
out:
kfree(vol_info->username);
kzfree(vol_info->password);
kfree_sensitive(vol_info->password);
kfree(vol_info);
return tcon;

2
fs/cifs/dfs_cache.c
View File

@ -1131,7 +1131,7 @@ err_free_domainname:
err_free_unc:
kfree(new->UNC);
err_free_password:
kzfree(new->password);
kfree_sensitive(new->password);
err_free_username:
kfree(new->username);
kfree(new);

8
fs/cifs/misc.c
View File

@ -103,12 +103,12 @@ sesInfoFree(struct cifs_ses *buf_to_free)
kfree(buf_to_free->serverOS);
kfree(buf_to_free->serverDomain);
kfree(buf_to_free->serverNOS);
kzfree(buf_to_free->password);
kfree_sensitive(buf_to_free->password);
kfree(buf_to_free->user_name);
kfree(buf_to_free->domainName);
kzfree(buf_to_free->auth_key.response);
kfree_sensitive(buf_to_free->auth_key.response);
kfree(buf_to_free->iface_list);
kzfree(buf_to_free);
kfree_sensitive(buf_to_free);
}
struct cifs_tcon *
@ -148,7 +148,7 @@ tconInfoFree(struct cifs_tcon *buf_to_free)
}
atomic_dec(&tconInfoAllocCount);
kfree(buf_to_free->nativeFileSystem);
kzfree(buf_to_free->password);
kfree_sensitive(buf_to_free->password);
kfree(buf_to_free->crfid.fid);
#ifdef CONFIG_CIFS_DFS_UPCALL
kfree(buf_to_free->dfs_path);

5
fs/crypto/inline_crypt.c
View File

@ -16,6 +16,7 @@
#include <linux/blkdev.h>
#include <linux/buffer_head.h>
#include <linux/sched/mm.h>
#include <linux/slab.h>
#include "fscrypt_private.h"
@ -187,7 +188,7 @@ int fscrypt_prepare_inline_crypt_key(struct fscrypt_prepared_key *prep_key,
fail:
for (i = 0; i < queue_refs; i++)
blk_put_queue(blk_key->devs[i]);
kzfree(blk_key);
kfree_sensitive(blk_key);
return err;
}
@ -201,7 +202,7 @@ void fscrypt_destroy_inline_crypt_key(struct fscrypt_prepared_key *prep_key)
blk_crypto_evict_key(blk_key->devs[i], &blk_key->base);
blk_put_queue(blk_key->devs[i]);
}
kzfree(blk_key);
kfree_sensitive(blk_key);
}
}

6
fs/crypto/keyring.c
View File

@ -51,7 +51,7 @@ static void free_master_key(struct fscrypt_master_key *mk)
}
key_put(mk->mk_users);
kzfree(mk);
kfree_sensitive(mk);
}
static inline bool valid_key_spec(const struct fscrypt_key_specifier *spec)
@ -531,7 +531,7 @@ static int fscrypt_provisioning_key_preparse(struct key_preparsed_payload *prep)
static void fscrypt_provisioning_key_free_preparse(
struct key_preparsed_payload *prep)
{
kzfree(prep->payload.data[0]);
kfree_sensitive(prep->payload.data[0]);
}
static void fscrypt_provisioning_key_describe(const struct key *key,
@ -548,7 +548,7 @@ static void fscrypt_provisioning_key_describe(const struct key *key,
static void fscrypt_provisioning_key_destroy(struct key *key)
{
kzfree(key->payload.data[0]);
kfree_sensitive(key->payload.data[0]);
}
static struct key_type key_type_fscrypt_provisioning = {

4
fs/crypto/keysetup_v1.c
View File

@ -155,7 +155,7 @@ static void free_direct_key(struct fscrypt_direct_key *dk)
{
if (dk) {
fscrypt_destroy_prepared_key(&dk->dk_key);
kzfree(dk);
kfree_sensitive(dk);
}
}
@ -283,7 +283,7 @@ static int setup_v1_file_key_derived(struct fscrypt_info *ci,
err = fscrypt_set_per_file_enc_key(ci, derived_key);
out:
kzfree(derived_key);
kfree_sensitive(derived_key);
return err;
}

4
fs/ecryptfs/keystore.c
View File

@ -838,7 +838,7 @@ ecryptfs_write_tag_70_packet(char *dest, size_t *remaining_bytes,
out_release_free_unlock:
crypto_free_shash(s->hash_tfm);
out_free_unlock:
kzfree(s->block_aligned_filename);
kfree_sensitive(s->block_aligned_filename);
out_unlock:
mutex_unlock(s->tfm_mutex);
out:
@ -847,7 +847,7 @@ out:
key_put(auth_tok_key);
}
skcipher_request_free(s->skcipher_req);
kzfree(s->hash_desc);
kfree_sensitive(s->hash_desc);
kfree(s);
return rc;
}

2
fs/ecryptfs/messaging.c
View File

@ -175,7 +175,7 @@ int ecryptfs_exorcise_daemon(struct ecryptfs_daemon *daemon)
}
hlist_del(&daemon->euid_chain);
mutex_unlock(&daemon->mux);
kzfree(daemon);
kfree_sensitive(daemon);
out:
return rc;
}

2
include/crypto/aead.h
View File

@ -425,7 +425,7 @@ static inline struct aead_request *aead_request_alloc(struct crypto_aead *tfm,
*/
static inline void aead_request_free(struct aead_request *req)
{
kzfree(req);
kfree_sensitive(req);
}
/**

2
include/crypto/akcipher.h
View File

@ -207,7 +207,7 @@ static inline struct akcipher_request *akcipher_request_alloc(
*/
static inline void akcipher_request_free(struct akcipher_request *req)
{
kzfree(req);
kfree_sensitive(req);
}
/**

2
include/crypto/gf128mul.h
View File

@ -230,7 +230,7 @@ void gf128mul_4k_bbe(be128 *a, const struct gf128mul_4k *t);
void gf128mul_x8_ble(le128 *r, const le128 *x);
static inline void gf128mul_free_4k(struct gf128mul_4k *t)
{
kzfree(t);
kfree_sensitive(t);
}

2
include/crypto/hash.h
View File

@ -606,7 +606,7 @@ static inline struct ahash_request *ahash_request_alloc(
*/
static inline void ahash_request_free(struct ahash_request *req)
{
kzfree(req);
kfree_sensitive(req);
}
static inline void ahash_request_zero(struct ahash_request *req)

2
include/crypto/internal/acompress.h
View File

@ -46,7 +46,7 @@ static inline struct acomp_req *__acomp_request_alloc(struct crypto_acomp *tfm)
static inline void __acomp_request_free(struct acomp_req *req)
{
kzfree(req);
kfree_sensitive(req);
}
/**

2
include/crypto/kpp.h
View File

@ -187,7 +187,7 @@ static inline struct kpp_request *kpp_request_alloc(struct crypto_kpp *tfm,
*/
static inline void kpp_request_free(struct kpp_request *req)
{
kzfree(req);
kfree_sensitive(req);
}
/**

2
include/crypto/skcipher.h
View File

@ -508,7 +508,7 @@ static inline struct skcipher_request *skcipher_request_alloc(
*/
static inline void skcipher_request_free(struct skcipher_request *req)
{
kzfree(req);
kfree_sensitive(req);
}
static inline void skcipher_request_zero(struct skcipher_request *req)

4
include/linux/slab.h
View File

@ -186,10 +186,12 @@ void memcg_deactivate_kmem_caches(struct mem_cgroup *, struct mem_cgroup *);
*/
void * __must_check krealloc(const void *, size_t, gfp_t);
void kfree(const void *);
void kzfree(const void *);
void kfree_sensitive(const void *);
size_t __ksize(const void *);
size_t ksize(const void *);
#define kzfree(x) kfree_sensitive(x) /* For backward compatibility */
#ifdef CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR
void __check_heap_object(const void *ptr, unsigned long n, struct page *page,
bool to_user);

6
lib/mpi/mpiutil.c
View File

@ -69,7 +69,7 @@ void mpi_free_limb_space(mpi_ptr_t a)
if (!a)
return;
kzfree(a);
kfree_sensitive(a);
}
void mpi_assign_limb_space(MPI a, mpi_ptr_t ap, unsigned nlimbs)
@ -95,7 +95,7 @@ int mpi_resize(MPI a, unsigned nlimbs)
if (!p)
return -ENOMEM;
memcpy(p, a->d, a->alloced * sizeof(mpi_limb_t));
kzfree(a->d);
kfree_sensitive(a->d);
a->d = p;
} else {
a->d = kcalloc(nlimbs, sizeof(mpi_limb_t), GFP_KERNEL);
@ -112,7 +112,7 @@ void mpi_free(MPI a)
return;
if (a->flags & 4)
kzfree(a->d);
kfree_sensitive(a->d);
else
mpi_free_limb_space(a->d);

6
lib/test_kasan.c
View File

@ -766,15 +766,15 @@ static noinline void __init kmalloc_double_kzfree(void)
char *ptr;
size_t size = 16;
pr_info("double-free (kzfree)\n");
pr_info("double-free (kfree_sensitive)\n");
ptr = kmalloc(size, GFP_KERNEL);
if (!ptr) {
pr_err("Allocation failed\n");
return;
}
kzfree(ptr);
kzfree(ptr);
kfree_sensitive(ptr);
kfree_sensitive(ptr);
}
#ifdef CONFIG_KASAN_VMALLOC

8
mm/slab_common.c
View File

@ -1729,17 +1729,17 @@ void *krealloc(const void *p, size_t new_size, gfp_t flags)
EXPORT_SYMBOL(krealloc);
/**
* kzfree - like kfree but zero memory
* kfree_sensitive - Clear sensitive information in memory before freeing
* @p: object to free memory of
*
* The memory of the object @p points to is zeroed before freed.
* If @p is %NULL, kzfree() does nothing.
* If @p is %NULL, kfree_sensitive() does nothing.
*
* Note: this function zeroes the whole allocated buffer which can be a good
* deal bigger than the requested buffer size passed to kmalloc(). So be
* careful when using this function in performance sensitive code.
*/
void kzfree(const void *p)
void kfree_sensitive(const void *p)
{
size_t ks;
void *mem = (void *)p;
@ -1750,7 +1750,7 @@ void kzfree(const void *p)
memzero_explicit(mem, ks);
kfree(mem);
}
EXPORT_SYMBOL(kzfree);
EXPORT_SYMBOL(kfree_sensitive);
/**
* ksize - get the actual amount of memory allocated for a given object

4
net/atm/mpoa_caches.c
View File

@ -180,7 +180,7 @@ static int cache_hit(in_cache_entry *entry, struct mpoa_client *mpc)
static void in_cache_put(in_cache_entry *entry)
{
if (refcount_dec_and_test(&entry->use)) {
kzfree(entry);
kfree_sensitive(entry);
}
}
@ -415,7 +415,7 @@ static eg_cache_entry *eg_cache_get_by_src_ip(__be32 ipaddr,
static void eg_cache_put(eg_cache_entry *entry)
{
if (refcount_dec_and_test(&entry->use)) {
kzfree(entry);
kfree_sensitive(entry);
}
}

6
net/bluetooth/ecdh_helper.c
View File

@ -104,7 +104,7 @@ int compute_ecdh_secret(struct crypto_kpp *tfm, const u8 public_key[64],
free_all:
kpp_request_free(req);
free_tmp:
kzfree(tmp);
kfree_sensitive(tmp);
return err;
}
@ -151,9 +151,9 @@ int set_ecdh_privkey(struct crypto_kpp *tfm, const u8 private_key[32])
err = crypto_kpp_set_secret(tfm, buf, buf_len);
/* fall through */
free_all:
kzfree(buf);
kfree_sensitive(buf);
free_tmp:
kzfree(tmp);
kfree_sensitive(tmp);
return err;
}

24
net/bluetooth/smp.c
View File

@ -753,9 +753,9 @@ static void smp_chan_destroy(struct l2cap_conn *conn)
complete = test_bit(SMP_FLAG_COMPLETE, &smp->flags);
mgmt_smp_complete(hcon, complete);
kzfree(smp->csrk);
kzfree(smp->slave_csrk);
kzfree(smp->link_key);
kfree_sensitive(smp->csrk);
kfree_sensitive(smp->slave_csrk);
kfree_sensitive(smp->link_key);
crypto_free_shash(smp->tfm_cmac);
crypto_free_kpp(smp->tfm_ecdh);
@ -789,7 +789,7 @@ static void smp_chan_destroy(struct l2cap_conn *conn)
}
chan->data = NULL;
kzfree(smp);
kfree_sensitive(smp);
hci_conn_drop(hcon);
}
@ -1156,7 +1156,7 @@ static void sc_generate_link_key(struct smp_chan *smp)
const u8 salt[16] = { 0x31, 0x70, 0x6d, 0x74 };
if (smp_h7(smp->tfm_cmac, smp->tk, salt, smp->link_key)) {
kzfree(smp->link_key);
kfree_sensitive(smp->link_key);
smp->link_key = NULL;
return;
}
@ -1165,14 +1165,14 @@ static void sc_generate_link_key(struct smp_chan *smp)
const u8 tmp1[4] = { 0x31, 0x70, 0x6d, 0x74 };
if (smp_h6(smp->tfm_cmac, smp->tk, tmp1, smp->link_key)) {
kzfree(smp->link_key);
kfree_sensitive(smp->link_key);
smp->link_key = NULL;
return;
}
}
if (smp_h6(smp->tfm_cmac, smp->link_key, lebr, smp->link_key)) {
kzfree(smp->link_key);
kfree_sensitive(smp->link_key);
smp->link_key = NULL;
return;
}
@ -1407,7 +1407,7 @@ static struct smp_chan *smp_chan_create(struct l2cap_conn *conn)
free_shash:
crypto_free_shash(smp->tfm_cmac);
zfree_smp:
kzfree(smp);
kfree_sensitive(smp);
return NULL;
}
@ -3278,7 +3278,7 @@ static struct l2cap_chan *smp_add_cid(struct hci_dev *hdev, u16 cid)
tfm_cmac = crypto_alloc_shash("cmac(aes)", 0, 0);
if (IS_ERR(tfm_cmac)) {
BT_ERR("Unable to create CMAC crypto context");
kzfree(smp);
kfree_sensitive(smp);
return ERR_CAST(tfm_cmac);
}
@ -3286,7 +3286,7 @@ static struct l2cap_chan *smp_add_cid(struct hci_dev *hdev, u16 cid)
if (IS_ERR(tfm_ecdh)) {
BT_ERR("Unable to create ECDH crypto context");
crypto_free_shash(tfm_cmac);
kzfree(smp);
kfree_sensitive(smp);
return ERR_CAST(tfm_ecdh);
}
@ -3300,7 +3300,7 @@ create_chan:
if (smp) {
crypto_free_shash(smp->tfm_cmac);
crypto_free_kpp(smp->tfm_ecdh);
kzfree(smp);
kfree_sensitive(smp);
}
return ERR_PTR(-ENOMEM);
}
@ -3347,7 +3347,7 @@ static void smp_del_chan(struct l2cap_chan *chan)
chan->data = NULL;
crypto_free_shash(smp->tfm_cmac);
crypto_free_kpp(smp->tfm_ecdh);
kzfree(smp);
kfree_sensitive(smp);
}
l2cap_chan_put(chan);

2
net/core/sock.c
View File

@ -2257,7 +2257,7 @@ static inline void __sock_kfree_s(struct sock *sk, void *mem, int size,
if (WARN_ON_ONCE(!mem))
return;
if (nullify)
kzfree(mem);
kfree_sensitive(mem);
else
kfree(mem);
atomic_sub(size, &sk->sk_omem_alloc);

2
net/ipv4/tcp_fastopen.c
View File

@ -38,7 +38,7 @@ static void tcp_fastopen_ctx_free(struct rcu_head *head)
struct tcp_fastopen_context *ctx =
container_of(head, struct tcp_fastopen_context, rcu);
kzfree(ctx);
kfree_sensitive(ctx);
}
void tcp_fastopen_destroy_cipher(struct sock *sk)

4
net/mac80211/aead_api.c
View File

@ -41,7 +41,7 @@ int aead_encrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad, size_t aad_len,
aead_request_set_ad(aead_req, sg[0].length);
crypto_aead_encrypt(aead_req);
kzfree(aead_req);
kfree_sensitive(aead_req);
return 0;
}
@ -76,7 +76,7 @@ int aead_decrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad, size_t aad_len,
aead_request_set_ad(aead_req, sg[0].length);
err = crypto_aead_decrypt(aead_req);
kzfree(aead_req);
kfree_sensitive(aead_req);
return err;
}

2
net/mac80211/aes_gmac.c
View File

@ -60,7 +60,7 @@ int ieee80211_aes_gmac(struct crypto_aead *tfm, const u8 *aad, u8 *nonce,
aead_request_set_ad(aead_req, GMAC_AAD_LEN + data_len);
crypto_aead_encrypt(aead_req);
kzfree(aead_req);
kfree_sensitive(aead_req);
return 0;
}

2
net/mac80211/key.c
View File

@ -732,7 +732,7 @@ static void ieee80211_key_free_common(struct ieee80211_key *key)
ieee80211_aes_gcm_key_free(key->u.gcmp.tfm);
break;
}
kzfree(key);
kfree_sensitive(key);
}
static void __ieee80211_key_destroy(struct ieee80211_key *key,

20
net/mac802154/llsec.c
View File

@ -49,7 +49,7 @@ void mac802154_llsec_destroy(struct mac802154_llsec *sec)
msl = container_of(sl, struct mac802154_llsec_seclevel, level);
list_del(&sl->list);
kzfree(msl);
kfree_sensitive(msl);
}
list_for_each_entry_safe(dev, dn, &sec->table.devices, list) {
@ -66,7 +66,7 @@ void mac802154_llsec_destroy(struct mac802154_llsec *sec)
mkey = container_of(key->key, struct mac802154_llsec_key, key);
list_del(&key->list);
llsec_key_put(mkey);
kzfree(key);
kfree_sensitive(key);
}
}
@ -155,7 +155,7 @@ err_tfm:
if (key->tfm[i])
crypto_free_aead(key->tfm[i]);
kzfree(key);
kfree_sensitive(key);
return NULL;
}
@ -170,7 +170,7 @@ static void llsec_key_release(struct kref *ref)
crypto_free_aead(key->tfm[i]);
crypto_free_sync_skcipher(key->tfm0);
kzfree(key);
kfree_sensitive(key);
}
static struct mac802154_llsec_key*
@ -261,7 +261,7 @@ int mac802154_llsec_key_add(struct mac802154_llsec *sec,
return 0;
fail:
kzfree(new);
kfree_sensitive(new);
return -ENOMEM;
}
@ -341,10 +341,10 @@ static void llsec_dev_free(struct mac802154_llsec_device *dev)
devkey);
list_del(&pos->list);
kzfree(devkey);
kfree_sensitive(devkey);
}
kzfree(dev);
kfree_sensitive(dev);
}
int mac802154_llsec_dev_add(struct mac802154_llsec *sec,
@ -682,7 +682,7 @@ llsec_do_encrypt_auth(struct sk_buff *skb, const struct mac802154_llsec *sec,
rc = crypto_aead_encrypt(req);
kzfree(req);
kfree_sensitive(req);
return rc;
}
@ -886,7 +886,7 @@ llsec_do_decrypt_auth(struct sk_buff *skb, const struct mac802154_llsec *sec,
rc = crypto_aead_decrypt(req);
kzfree(req);
kfree_sensitive(req);
skb_trim(skb, skb->len - authlen);
return rc;
@ -926,7 +926,7 @@ llsec_update_devkey_record(struct mac802154_llsec_device *dev,
if (!devkey)
list_add_rcu(&next->devkey.list, &dev->dev.keys);
else
kzfree(next);
kfree_sensitive(next);
spin_unlock_bh(&dev->lock);
}

2
net/sctp/auth.c
View File

@ -49,7 +49,7 @@ void sctp_auth_key_put(struct sctp_auth_bytes *key)
return;
if (refcount_dec_and_test(&key->refcnt)) {
kzfree(key);
kfree_sensitive(key);
SCTP_DBG_OBJCNT_DEC(keys);
}
}

4
net/sunrpc/auth_gss/gss_krb5_crypto.c
View File

@ -1003,7 +1003,7 @@ krb5_rc4_setup_seq_key(struct krb5_ctx *kctx,
err = 0;
out_err:
kzfree(desc);
kfree_sensitive(desc);
crypto_free_shash(hmac);
dprintk("%s: returning %d\n", __func__, err);
return err;
@ -1079,7 +1079,7 @@ krb5_rc4_setup_enc_key(struct krb5_ctx *kctx,
err = 0;
out_err:
kzfree(desc);
kfree_sensitive(desc);
crypto_free_shash(hmac);
dprintk("%s: returning %d\n", __func__, err);
return err;

6
net/sunrpc/auth_gss/gss_krb5_keys.c
View File

@ -228,11 +228,11 @@ u32 krb5_derive_key(const struct gss_krb5_enctype *gk5e,
ret = 0;
err_free_raw:
kzfree(rawkey);
kfree_sensitive(rawkey);
err_free_out:
kzfree(outblockdata);
kfree_sensitive(outblockdata);
err_free_in:
kzfree(inblockdata);
kfree_sensitive(inblockdata);
err_free_cipher:
crypto_free_sync_skcipher(cipher);
err_return:

2
net/sunrpc/auth_gss/gss_krb5_mech.c
View File

@ -443,7 +443,7 @@ context_derive_keys_rc4(struct krb5_ctx *ctx)
desc->tfm = hmac;
err = crypto_shash_digest(desc, sigkeyconstant, slen, ctx->cksum);
kzfree(desc);
kfree_sensitive(desc);
if (err)
goto out_err_free_hmac;
/*

10
net/tipc/crypto.c
View File

@ -441,7 +441,7 @@ static int tipc_aead_init(struct tipc_aead **aead, struct tipc_aead_key *ukey,
/* Allocate per-cpu TFM entry pointer */
tmp->tfm_entry = alloc_percpu(struct tipc_tfm *);
if (!tmp->tfm_entry) {
kzfree(tmp);
kfree_sensitive(tmp);
return -ENOMEM;
}
@ -491,7 +491,7 @@ static int tipc_aead_init(struct tipc_aead **aead, struct tipc_aead_key *ukey,
/* Not any TFM is allocated? */
if (!tfm_cnt) {
free_percpu(tmp->tfm_entry);
kzfree(tmp);
kfree_sensitive(tmp);
return err;
}
@ -545,7 +545,7 @@ static int tipc_aead_clone(struct tipc_aead **dst, struct tipc_aead *src)
aead->tfm_entry = alloc_percpu_gfp(struct tipc_tfm *, GFP_ATOMIC);
if (unlikely(!aead->tfm_entry)) {
kzfree(aead);
kfree_sensitive(aead);
return -ENOMEM;
}
@ -1352,7 +1352,7 @@ int tipc_crypto_start(struct tipc_crypto **crypto, struct net *net,
/* Allocate statistic structure */
c->stats = alloc_percpu_gfp(struct tipc_crypto_stats, GFP_ATOMIC);
if (!c->stats) {
kzfree(c);
kfree_sensitive(c);
return -ENOMEM;
}
@ -1408,7 +1408,7 @@ void tipc_crypto_stop(struct tipc_crypto **crypto)
free_percpu(c->stats);
*crypto = NULL;
kzfree(c);
kfree_sensitive(c);
}
void tipc_crypto_timeout(struct tipc_crypto *rx)

2
net/wireless/core.c
View File

@ -1125,7 +1125,7 @@ static void __cfg80211_unregister_wdev(struct wireless_dev *wdev, bool sync)
}
#ifdef CONFIG_CFG80211_WEXT
kzfree(wdev->wext.keys);
kfree_sensitive(wdev->wext.keys);
wdev->wext.keys = NULL;
#endif
/* only initialized if we have a netdev */

4
net/wireless/ibss.c
View File

@ -127,7 +127,7 @@ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
return -EINVAL;
if (WARN_ON(wdev->connect_keys))
kzfree(wdev->connect_keys);
kfree_sensitive(wdev->connect_keys);
wdev->connect_keys = connkeys;
wdev->ibss_fixed = params->channel_fixed;
@ -161,7 +161,7 @@ static void __cfg80211_clear_ibss(struct net_device *dev, bool nowext)
ASSERT_WDEV_LOCK(wdev);
kzfree(wdev->connect_keys);
kfree_sensitive(wdev->connect_keys);
wdev->connect_keys = NULL;
rdev_set_qos_map(rdev, dev, NULL);

2
net/wireless/lib80211_crypt_tkip.c
View File

@ -131,7 +131,7 @@ static void lib80211_tkip_deinit(void *priv)
crypto_free_shash(_priv->tx_tfm_michael);
crypto_free_shash(_priv->rx_tfm_michael);
}
kzfree(priv);
kfree_sensitive(priv);
}
static inline u16 RotR1(u16 val)

2
net/wireless/lib80211_crypt_wep.c
View File

@ -56,7 +56,7 @@ static void *lib80211_wep_init(int keyidx)
static void lib80211_wep_deinit(void *priv)
{
kzfree(priv);
kfree_sensitive(priv);
}
/* Add WEP IV/key info to a frame that has at least 4 bytes of headroom */

24
net/wireless/nl80211.c
View File

@ -9836,7 +9836,7 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
no_ht) {
kzfree(connkeys);
kfree_sensitive(connkeys);
return -EINVAL;
}
}
@ -9848,7 +9848,7 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
int r = validate_pae_over_nl80211(rdev, info);
if (r < 0) {
kzfree(connkeys);
kfree_sensitive(connkeys);
return r;
}
@ -9861,7 +9861,7 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
wdev_lock(dev->ieee80211_ptr);
err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
if (err)
kzfree(connkeys);
kfree_sensitive(connkeys);
else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
wdev_unlock(dev->ieee80211_ptr);
@ -10289,7 +10289,7 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
kzfree(connkeys);
kfree_sensitive(connkeys);
return -EINVAL;
}
memcpy(&connect.ht_capa,
@ -10307,7 +10307,7 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
kzfree(connkeys);
kfree_sensitive(connkeys);
return -EINVAL;
}
memcpy(&connect.vht_capa,
@ -10321,7 +10321,7 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
(rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_RRM)) {
kzfree(connkeys);
kfree_sensitive(connkeys);
return -EINVAL;
}
connect.flags |= ASSOC_REQ_USE_RRM;
@ -10329,21 +10329,21 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
kzfree(connkeys);
kfree_sensitive(connkeys);
return -EOPNOTSUPP;
}
if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
/* bss selection makes no sense if bssid is set */
if (connect.bssid) {
kzfree(connkeys);
kfree_sensitive(connkeys);
return -EINVAL;
}
err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
wiphy, &connect.bss_select);
if (err) {
kzfree(connkeys);
kfree_sensitive(connkeys);
return err;
}
}
@ -10373,13 +10373,13 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
kzfree(connkeys);
kfree_sensitive(connkeys);
return -EINVAL;
}
if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
kzfree(connkeys);
kfree_sensitive(connkeys);
GENL_SET_ERR_MSG(info,
"external auth requires connection ownership");
return -EINVAL;
@ -10392,7 +10392,7 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
err = cfg80211_connect(rdev, dev, &connect, connkeys,
connect.prev_bssid);
if (err)
kzfree(connkeys);
kfree_sensitive(connkeys);
if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;

6
net/wireless/sme.c
View File

@ -742,7 +742,7 @@ void __cfg80211_connect_result(struct net_device *dev,
}
if (cr->status != WLAN_STATUS_SUCCESS) {
kzfree(wdev->connect_keys);
kfree_sensitive(wdev->connect_keys);
wdev->connect_keys = NULL;
wdev->ssid_len = 0;
wdev->conn_owner_nlportid = 0;
@ -1098,7 +1098,7 @@ void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
wdev->current_bss = NULL;
wdev->ssid_len = 0;
wdev->conn_owner_nlportid = 0;
kzfree(wdev->connect_keys);
kfree_sensitive(wdev->connect_keys);
wdev->connect_keys = NULL;
nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
@ -1281,7 +1281,7 @@ int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
ASSERT_WDEV_LOCK(wdev);
kzfree(wdev->connect_keys);
kfree_sensitive(wdev->connect_keys);
wdev->connect_keys = NULL;
wdev->conn_owner_nlportid = 0;

2
net/wireless/util.c
View File

@ -871,7 +871,7 @@ void cfg80211_upload_connect_keys(struct wireless_dev *wdev)
}
}
kzfree(wdev->connect_keys);
kfree_sensitive(wdev->connect_keys);
wdev->connect_keys = NULL;
}

2
net/wireless/wext-sme.c
View File

@ -57,7 +57,7 @@ int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
err = cfg80211_connect(rdev, wdev->netdev,
&wdev->wext.connect, ck, prev_bssid);
if (err)
kzfree(ck);
kfree_sensitive(ck);
return err;
}

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