Commit Graph

3444 Commits

Author SHA1 Message Date
Linus Torvalds
68cf01760b This update includes the following changes:
API:
 
 - Move crypto engine callback from tfm ctx into algorithm object.
 - Fix atomic sleep bug in crypto_destroy_instance.
 - Move lib/mpi into lib/crypto.
 
 Algorithms:
 
 - Add chacha20 and poly1305 implementation for powerpc p10.
 
 Drivers:
 
 - Add AES skcipher and aead support to starfive.
 - Add Dynamic Boost Control support to ccp.
 - Add support for STM32P13 platform to stm32.
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Merge tag 'v6.6-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto updates from Herbert Xu:
 "API:
   - Move crypto engine callback from tfm ctx into algorithm object
   - Fix atomic sleep bug in crypto_destroy_instance
   - Move lib/mpi into lib/crypto

  Algorithms:
   - Add chacha20 and poly1305 implementation for powerpc p10

  Drivers:
   - Add AES skcipher and aead support to starfive
   - Add Dynamic Boost Control support to ccp
   - Add support for STM32P13 platform to stm32"

* tag 'v6.6-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (149 commits)
  Revert "dt-bindings: crypto: qcom,prng: Add SM8450"
  crypto: chelsio - Remove unused declarations
  X.509: if signature is unsupported skip validation
  crypto: qat - fix crypto capability detection for 4xxx
  crypto: drivers - Explicitly include correct DT includes
  crypto: engine - Remove crypto_engine_ctx
  crypto: zynqmp - Use new crypto_engine_op interface
  crypto: virtio - Use new crypto_engine_op interface
  crypto: stm32 - Use new crypto_engine_op interface
  crypto: jh7110 - Use new crypto_engine_op interface
  crypto: rk3288 - Use new crypto_engine_op interface
  crypto: omap - Use new crypto_engine_op interface
  crypto: keembay - Use new crypto_engine_op interface
  crypto: sl3516 - Use new crypto_engine_op interface
  crypto: caam - Use new crypto_engine_op interface
  crypto: aspeed - Remove non-standard sha512 algorithms
  crypto: aspeed - Use new crypto_engine_op interface
  crypto: amlogic - Use new crypto_engine_op interface
  crypto: sun8i-ss - Use new crypto_engine_op interface
  crypto: sun8i-ce - Use new crypto_engine_op interface
  ...
2023-08-29 11:23:29 -07:00
Linus Torvalds
f2586d921c Hi,
Contents:
 
 - Restrict linking of keys to .ima and .evm keyrings based on
   digitalSignature attribute in the certificate.
 - PowerVM: load machine owner keys into the .machine [1] keyring.
 - PowerVM: load module signing keys into the secondary trusted keyring
   (keys blessed by the vendor).
 - tpm_tis_spi: half-duplex transfer mode
 - tpm_tis: retry corrupted transfers
 - Apply revocation list (.mokx) to an all system keyrings (e.g. .machine
   keyring).
 
 [1] https://blogs.oracle.com/linux/post/the-machine-keyring
 
 BR, Jarkko
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Merge tag 'tpmdd-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd

Pull tpm updates from Jarkko Sakkinen:

 - Restrict linking of keys to .ima and .evm keyrings based on
   digitalSignature attribute in the certificate

 - PowerVM: load machine owner keys into the .machine [1] keyring

 - PowerVM: load module signing keys into the secondary trusted keyring
   (keys blessed by the vendor)

 - tpm_tis_spi: half-duplex transfer mode

 - tpm_tis: retry corrupted transfers

 - Apply revocation list (.mokx) to an all system keyrings (e.g.
   .machine keyring)

Link: https://blogs.oracle.com/linux/post/the-machine-keyring [1]

* tag 'tpmdd-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
  certs: Reference revocation list for all keyrings
  tpm/tpm_tis_synquacer: Use module_platform_driver macro to simplify the code
  tpm: remove redundant variable len
  tpm_tis: Resend command to recover from data transfer errors
  tpm_tis: Use responseRetry to recover from data transfer errors
  tpm_tis: Move CRC check to generic send routine
  tpm_tis_spi: Add hardware wait polling
  KEYS: Replace all non-returning strlcpy with strscpy
  integrity: PowerVM support for loading third party code signing keys
  integrity: PowerVM machine keyring enablement
  integrity: check whether imputed trust is enabled
  integrity: remove global variable from machine_keyring.c
  integrity: ignore keys failing CA restrictions on non-UEFI platform
  integrity: PowerVM support for loading CA keys on machine keyring
  integrity: Enforce digitalSignature usage in the ima and evm keyrings
  KEYS: DigitalSignature link restriction
  tpm_tis: Revert "tpm_tis: Disable interrupts on ThinkPad T490s"
2023-08-29 08:05:18 -07:00
Thore Sommer
ef5b52a631 X.509: if signature is unsupported skip validation
When the hash algorithm for the signature is not available the digest size
is 0 and the signature in the certificate is marked as unsupported.

When validating a self-signed certificate, this needs to be checked,
because otherwise trying to validate the signature will fail with an
warning:

Loading compiled-in X.509 certificates
WARNING: CPU: 0 PID: 1 at crypto/rsa-pkcs1pad.c:537 \
pkcs1pad_verify+0x46/0x12c
...
Problem loading in-kernel X.509 certificate (-22)

Signed-off-by: Thore Sommer <public@thson.de>
Cc: stable@vger.kernel.org # v4.7+
Fixes: 6c2dc5ae4a ("X.509: Extract signature digest and make self-signed cert checks earlier")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-08-25 18:46:55 +08:00
Pavel Skripkin
080aa61e37 crypto: fix uninit-value in af_alg_free_resources
Syzbot was able to trigger use of uninitialized memory in
af_alg_free_resources.

Bug is caused by missing initialization of rsgl->sgl.need_unpin before
adding to rsgl_list. Then in case of extract_iter_to_sg() failure, rsgl
is left with uninitialized need_unpin which is read during clean up

BUG: KMSAN: uninit-value in af_alg_free_sg crypto/af_alg.c:545 [inline]
BUG: KMSAN: uninit-value in af_alg_free_areq_sgls crypto/af_alg.c:778 [inline]
BUG: KMSAN: uninit-value in af_alg_free_resources+0x3d1/0xf60 crypto/af_alg.c:1117
 af_alg_free_sg crypto/af_alg.c:545 [inline]
 af_alg_free_areq_sgls crypto/af_alg.c:778 [inline]
 af_alg_free_resources+0x3d1/0xf60 crypto/af_alg.c:1117
 _skcipher_recvmsg crypto/algif_skcipher.c:144 [inline]
...

Uninit was created at:
 slab_post_alloc_hook+0x12f/0xb70 mm/slab.h:767
 slab_alloc_node mm/slub.c:3470 [inline]
 __kmem_cache_alloc_node+0x536/0x8d0 mm/slub.c:3509
 __do_kmalloc_node mm/slab_common.c:984 [inline]
 __kmalloc+0x121/0x3c0 mm/slab_common.c:998
 kmalloc include/linux/slab.h:586 [inline]
 sock_kmalloc+0x128/0x1c0 net/core/sock.c:2683
 af_alg_alloc_areq+0x41/0x2a0 crypto/af_alg.c:1188
 _skcipher_recvmsg crypto/algif_skcipher.c:71 [inline]

Fixes: c1abe6f570 ("crypto: af_alg: Use extract_iter_to_sg() to create scatterlists")
Reported-and-tested-by: syzbot+cba21d50095623218389@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=cba21d50095623218389
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-08-18 18:30:09 +08:00
Herbert Xu
5ce0bc68e0 crypto: engine - Remove crypto_engine_ctx
Remove the obsolete crypto_engine_ctx structure.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-08-18 17:01:11 +08:00
Herbert Xu
e5e7eb023f crypto: engine - Move crypto_engine_ops from request into crypto_alg
Rather than having the callback in the request, move it into the
crypto_alg object.  This avoids having crypto_engine look into the
request context is private to the driver.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-08-18 17:01:10 +08:00
Herbert Xu
45c461c503 crypto: engine - Create internal/engine.h
Create crypto/internal/engine.h to house details that should not
be used by drivers.  It is empty for the time being.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-08-18 17:01:10 +08:00
Herbert Xu
68021dee25 crypto: engine - Move crypto inclusions out of header file
The engine file does not need the actual crypto type definitions
so move those header inclusions to where they are actually used.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-08-18 17:01:10 +08:00
Herbert Xu
bcd6e41d98 crypto: engine - Remove prepare/unprepare request
The callbacks for prepare and unprepare request in crypto_engine
is superfluous.  They can be done directly from do_one_request.

Move the code into do_one_request and remove the unused callbacks.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-08-18 17:01:10 +08:00
Eric Snowberg
4cfb908054 KEYS: DigitalSignature link restriction
Add a new link restriction.  Restrict the addition of keys in a keyring
based on the key having digitalSignature usage set. Additionally, verify
the new certificate against the ones in the system keyrings.  Add two
additional functions to use the new restriction within either the builtin
or secondary keyrings.

[jarkko@kernel.org: Fix checkpatch.pl --strict issues]
Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
Reviewed-and-tested-by: Mimi Zohar <zohar@linux.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
2023-08-17 20:12:20 +00:00
Joachim Vandersmissen
91cb1e1432 crypto: jitter - Add clarifying comments to Jitter Entropy RCT cutoff values
The RCT cutoff values are correct, but they don't exactly match the ones
one would expect when computing them using the formula in SP800-90B. This
discrepancy is due to the fact that the Jitter Entropy RCT starts at 1. To
avoid any confusion by future reviewers, add some comments and explicitly
subtract 1 from the "correct" cutoff values in the definitions.

Signed-off-by: Joachim Vandersmissen <git@jvdsn.com>
Reviewed-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-08-11 19:19:52 +08:00
Herbert Xu
9ae4577bc0 crypto: api - Use work queue in crypto_destroy_instance
The function crypto_drop_spawn expects to be called in process
context.  However, when an instance is unregistered while it still
has active users, the last user may cause the instance to be freed
in atomic context.

Fix this by delaying the freeing to a work queue.

Fixes: 6bfd48096f ("[CRYPTO] api: Added spawns")
Reported-by: Florent Revest <revest@chromium.org>
Reported-by: syzbot+d769eed29cc42d75e2a3@syzkaller.appspotmail.com
Reported-by: syzbot+610ec0671f51e838436e@syzkaller.appspotmail.com
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Tested-by: Florent Revest <revest@chromium.org>
Acked-by: Florent Revest <revest@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-08-11 19:19:27 +08:00
Frederick Lawler
6b4b53ca0b crypto: af_alg - Decrement struct key.usage in alg_set_by_key_serial()
Calls to lookup_user_key() require a corresponding key_put() to
decrement the usage counter. Once it reaches zero, we schedule key GC.
Therefore decrement struct key.usage in alg_set_by_key_serial().

Fixes: 7984ceb134 ("crypto: af_alg - Support symmetric encryption via keyring keys")
Cc: <stable@vger.kernel.org>
Signed-off-by: Frederick Lawler <fred@cloudflare.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-08-11 19:19:27 +08:00
David Howells
6a4b8aa0a9 crypto: af_alg - Fix missing initialisation affecting gcm-aes-s390
Fix af_alg_alloc_areq() to initialise areq->first_rsgl.sgl.sgt.sgl to point
to the scatterlist array in areq->first_rsgl.sgl.sgl.

Without this, the gcm-aes-s390 driver will oops when it tries to do
gcm_walk_start() on req->dst because req->dst is set to the value of
areq->first_rsgl.sgl.sgl by _aead_recvmsg() calling
aead_request_set_crypt().

The problem comes if an empty ciphertext is passed: the loop in
af_alg_get_rsgl() just passes straight out and doesn't set areq->first_rsgl
up.

This isn't a problem on x86_64 using gcmaes_crypt_by_sg() because, as far
as I can tell, that ignores req->dst and only uses req->src[*].

[*] Is this a bug in aesni-intel_glue.c?

The s390x oops looks something like:

 Unable to handle kernel pointer dereference in virtual kernel address space
 Failing address: 0000000a00000000 TEID: 0000000a00000803
 Fault in home space mode while using kernel ASCE.
 AS:00000000a43a0007 R3:0000000000000024
 Oops: 003b ilc:2 [#1] SMP
 ...
 Call Trace:
  [<000003ff7fc3d47e>] gcm_walk_start+0x16/0x28 [aes_s390]
  [<00000000a2a342f2>] crypto_aead_decrypt+0x9a/0xb8
  [<00000000a2a60888>] aead_recvmsg+0x478/0x698
  [<00000000a2e519a0>] sock_recvmsg+0x70/0xb0
  [<00000000a2e51a56>] sock_read_iter+0x76/0xa0
  [<00000000a273e066>] vfs_read+0x26e/0x2a8
  [<00000000a273e8c4>] ksys_read+0xbc/0x100
  [<00000000a311d808>] __do_syscall+0x1d0/0x1f8
  [<00000000a312ff30>] system_call+0x70/0x98
 Last Breaking-Event-Address:
  [<000003ff7fc3e6b4>] gcm_aes_crypt+0x104/0xa68 [aes_s390]

Fixes: c1abe6f570 ("crypto: af_alg: Use extract_iter_to_sg() to create scatterlists")
Reported-by: Ondrej Mosnáček <omosnacek@gmail.com>
Link: https://lore.kernel.org/r/CAAUqJDuRkHE8fPgZJGaKjUjd3QfGwzfumuJBmStPqBhubxyk_A@mail.gmail.com/
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Herbert Xu <herbert@gondor.apana.org.au>
cc: Sven Schnelle <svens@linux.ibm.com>
cc: Harald Freudenberger <freude@linux.vnet.ibm.com>
cc: "David S. Miller" <davem@davemloft.net>
cc: Paolo Abeni <pabeni@redhat.com>
cc: linux-crypto@vger.kernel.org
cc: linux-s390@vger.kernel.org
cc: regressions@lists.linux.dev
Tested-by: Sven Schnelle <svens@linux.ibm.com>
Tested-by: Ondrej Mosnáček <omosnacek@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-08-04 17:09:26 +08:00
Mahmoud Adam
9f3fa6bc4f KEYS: use kfree_sensitive with key
key might contain private part of the key, so better use
kfree_sensitive to free it

Signed-off-by: Mahmoud Adam <mngyadam@amazon.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-07-28 18:20:25 +08:00
Jiapeng Chong
20508b751b crypto: sig - Remove some unused functions
These functions are defined in the sig.c file, but not called elsewhere,
so delete these unused functions.

crypto/sig.c:24:34: warning: unused function '__crypto_sig_tfm'.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=5701
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-07-20 22:15:12 +12:00
Azeem Shaikh
babb80b3ec crypto: lrw,xts - Replace strlcpy with strscpy
strlcpy() reads the entire source buffer first.
This read may exceed the destination size limit.
This is both inefficient and can lead to linear read
overflows if a source string is not NUL-terminated [1].
In an effort to remove strlcpy() completely [2], replace
strlcpy() here with strscpy().

Direct replacement is safe here since return value of -errno
is used to check for truncation instead of sizeof(dest).

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy
[2] https://github.com/KSPP/linux/issues/89

Signed-off-by: Azeem Shaikh <azeemshaikh38@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-07-14 18:23:14 +10:00
Gaosheng Cui
31ba6dd229 KEYS: fix kernel-doc warnings in verify_pefile
Fix kernel-doc warnings in verify_pefile:

crypto/asymmetric_keys/verify_pefile.c:423: warning: Excess function
parameter 'trust_keys' description in 'verify_pefile_signature'

crypto/asymmetric_keys/verify_pefile.c:423: warning: Function parameter
or member 'trusted_keys' not described in 'verify_pefile_signature'

Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-07-14 18:23:14 +10:00
David Howells
0b7ec177b5 crypto: algif_hash - Fix race between MORE and non-MORE sends
The 'MSG_MORE' state of the previous sendmsg() is fetched without the
socket lock held, so two sendmsg calls can race.  This can be seen with a
large sendfile() as that now does a series of sendmsg() calls, and if a
write() comes in on the same socket at an inopportune time, it can flip the
state.

Fix this by moving the fetch of ctx->more inside the socket lock.

Fixes: c662b043cd ("crypto: af_alg/hash: Support MSG_SPLICE_PAGES")
Reported-by: syzbot+689ec3afb1ef07b766b2@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/000000000000554b8205ffdea64e@google.com/
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: syzbot+689ec3afb1ef07b766b2@syzkaller.appspotmail.com
cc: Herbert Xu <herbert@gondor.apana.org.au>
cc: Paolo Abeni <pabeni@redhat.com>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: linux-crypto@vger.kernel.org
cc: netdev@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-07-08 22:48:42 +10:00
Dan Carpenter
9e9311e04e KEYS: asymmetric: Fix error codes
These error paths should return the appropriate error codes instead of
returning success.

Fixes: 63ba4d6759 ("KEYS: asymmetric: Use new crypto interface without scatterlists")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-07-07 14:16:47 +10:00
David Howells
d3dccb0a48 crypto: af_alg - Fix merging of written data into spliced pages
af_alg_sendmsg() takes data-to-be-copied that's provided by write(),
send(), sendmsg() and similar into pages that it allocates and will merge
new data into the last page in the list, based on the value of ctx->merge.

Now that af_alg_sendmsg() accepts MSG_SPLICE_PAGES, it adds spliced pages
directly into the list and then incorrectly appends data to them if there's
space left because ctx->merge says that it can.  This was cleared by
af_alg_sendpage(), but that got lost.

Fix this by skipping the merge if MSG_SPLICE_PAGES is specified and
clearing ctx->merge after MSG_SPLICE_PAGES has added stuff to the list.

Fixes: bf63e250c4 ("crypto: af_alg: Support MSG_SPLICE_PAGES")
Reported-by: Ondrej Mosnáček <omosnacek@gmail.com>
Link: https://lore.kernel.org/r/CAAUqJDvFuvms55Td1c=XKv6epfRnnP78438nZQ-JKyuCptGBiQ@mail.gmail.com/
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Herbert Xu <herbert@gondor.apana.org.au>
cc: Paolo Abeni <pabeni@redhat.com>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: linux-crypto@vger.kernel.org
cc: netdev@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-07-05 16:14:24 +08:00
Linus Torvalds
5d95ff84e6 This update includes the following changes:
API:
 
 - Add linear akcipher/sig API.
 - Add tfm cloning (hmac, cmac).
 - Add statesize to crypto_ahash.
 
 Algorithms:
 
 - Allow only odd e and restrict value in FIPS mode for RSA.
 - Replace LFSR with SHA3-256 in jitter.
 - Add interface for gathering of raw entropy in jitter.
 
 Drivers:
 
 - Fix race on data_avail and actual data in hwrng/virtio.
 - Add hash and HMAC support in starfive.
 - Add RSA algo support in starfive.
 - Add support for PCI device 0x156E in ccp.
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Merge tag 'v6.5-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto updates from Herbert Xu:
 "API:
   - Add linear akcipher/sig API
   - Add tfm cloning (hmac, cmac)
   - Add statesize to crypto_ahash

  Algorithms:
   - Allow only odd e and restrict value in FIPS mode for RSA
   - Replace LFSR with SHA3-256 in jitter
   - Add interface for gathering of raw entropy in jitter

  Drivers:
   - Fix race on data_avail and actual data in hwrng/virtio
   - Add hash and HMAC support in starfive
   - Add RSA algo support in starfive
   - Add support for PCI device 0x156E in ccp"

* tag 'v6.5-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (85 commits)
  crypto: akcipher - Do not copy dst if it is NULL
  crypto: sig - Fix verify call
  crypto: akcipher - Set request tfm on sync path
  crypto: sm2 - Provide sm2_compute_z_digest when sm2 is disabled
  hwrng: imx-rngc - switch to DEFINE_SIMPLE_DEV_PM_OPS
  hwrng: st - keep clock enabled while hwrng is registered
  hwrng: st - support compile-testing
  hwrng: imx-rngc - fix the timeout for init and self check
  KEYS: asymmetric: Use new crypto interface without scatterlists
  KEYS: asymmetric: Move sm2 code into x509_public_key
  KEYS: Add forward declaration in asymmetric-parser.h
  crypto: sig - Add interface for sign/verify
  crypto: akcipher - Add sync interface without SG lists
  crypto: cipher - On clone do crypto_mod_get()
  crypto: api - Add __crypto_alloc_tfmgfp
  crypto: api - Remove crypto_init_ops()
  crypto: rsa - allow only odd e and restrict value in FIPS mode
  crypto: geniv - Split geniv out of AEAD Kconfig option
  crypto: algboss - Add missing dependency on RNG2
  crypto: starfive - Add RSA algo support
  ...
2023-06-30 21:27:13 -07:00
Herbert Xu
486bfb0591 crypto: akcipher - Do not copy dst if it is NULL
As signature verification has a NULL destination buffer, the pointer
needs to be checked before the memcpy is done.

Fixes: addde1f2c9 ("crypto: akcipher - Add sync interface without SG lists")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-06-27 17:59:52 +08:00
Herbert Xu
891ebfdfa3 crypto: sig - Fix verify call
The dst SG list needs to be set to NULL for verify calls.  Do
this as otherwise the underlying algorithm may fail.

Furthermore the digest needs to be copied just like the source.

Fixes: 6cb8815f41 ("crypto: sig - Add interface for sign/verify")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-06-27 15:40:24 +08:00
Herbert Xu
767cfee836 crypto: akcipher - Set request tfm on sync path
The request tfm needs to be set.

Fixes: addde1f2c9 ("crypto: akcipher - Add sync interface without SG lists")
Reported-by: kernel test robot <oliver.sang@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202306261421.2ac744fa-oliver.sang@intel.com
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-06-27 15:40:24 +08:00
David Howells
dc97391e66 sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)
Remove ->sendpage() and ->sendpage_locked().  sendmsg() with
MSG_SPLICE_PAGES should be used instead.  This allows multiple pages and
multipage folios to be passed through.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> # for net/can
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
cc: linux-afs@lists.infradead.org
cc: mptcp@lists.linux.dev
cc: rds-devel@oss.oracle.com
cc: tipc-discussion@lists.sourceforge.net
cc: virtualization@lists.linux-foundation.org
Link: https://lore.kernel.org/r/20230623225513.2732256-16-dhowells@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-24 15:50:13 -07:00
Herbert Xu
63ba4d6759 KEYS: asymmetric: Use new crypto interface without scatterlists
Use the new akcipher and sig interfaces which no longer have
scatterlists in them.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-06-23 16:15:37 +08:00
Herbert Xu
e5221fa6a3 KEYS: asymmetric: Move sm2 code into x509_public_key
The sm2 certificate requires a modified digest.  Move the code
for the hashing from the signature verification path into the
code where we generate the digest.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-06-23 16:15:37 +08:00
Herbert Xu
6cb8815f41 crypto: sig - Add interface for sign/verify
Split out the sign/verify functionality from the existing akcipher
interface.  Most algorithms in akcipher either support encryption
and decryption, or signing and verify.  Only one supports both.

As a signature algorithm may not support encryption at all, these
two should be spearated.

For now sig is simply a wrapper around akcipher as all algorithms
remain unchanged.  This is a first step and allows users to start
allocating sig instead of akcipher.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-06-23 16:15:36 +08:00
Herbert Xu
addde1f2c9 crypto: akcipher - Add sync interface without SG lists
The only user of akcipher does not use SG lists.  Therefore forcing
users to use SG lists only results unnecessary overhead.  Add a new
interface that supports arbitrary kernel pointers.

For the time being the copy will be performed unconditionally.  But
this will go away once the underlying interface is updated.

Note also that only encryption and decryption is addressed by this
patch as sign/verify will go into a new interface (sig).

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-06-23 16:15:36 +08:00
Dmitry Safonov
9979c6e55d crypto: cipher - On clone do crypto_mod_get()
The refcounter of underlying algorithm should be incremented, otherwise
it'll be destroyed with the cloned cipher, wrecking the original cipher.

Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-06-23 16:15:36 +08:00
Herbert Xu
fa3b3565f3 crypto: api - Add __crypto_alloc_tfmgfp
Use it straight away in crypto_clone_cipher(), as that is not meant to
sleep.

Fixes: 51d8d6d0f4 ("crypto: cipher - Add crypto_clone_cipher")
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-06-23 16:15:36 +08:00
Dmitry Safonov
fa919f9e88 crypto: api - Remove crypto_init_ops()
Purge crypto_type::init() as well.
The last user seems to be gone with commit d63007eb95 ("crypto:
ablkcipher - remove deprecated and unused ablkcipher support").

Signed-off-by: Dmitry Safonov <dima@arista.com>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-06-23 16:15:36 +08:00
Mahmoud Adam
6637e11e4a crypto: rsa - allow only odd e and restrict value in FIPS mode
check if rsa public exponent is odd and check its value is between
2^16 < e < 2^256.

FIPS 186-5 DSS (page 35)[1] specify that:
1. The public exponent e shall be selected with the following constraints:
  (a) The public verification exponent e shall be selected prior to
  generating the primes, p and q, and the private signature exponent
  d.
  (b) The exponent e shall be an odd positive integer such that:
   2^16 < e < 2^256.

[1] https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.186-5.pdf

Signed-off-by: Mahmoud Adam <mngyadam@amazon.com>
Reviewed-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-06-23 16:15:36 +08:00
Herbert Xu
ba51738fa7 crypto: geniv - Split geniv out of AEAD Kconfig option
Give geniv its own Kconfig option so that its dependencies are
distinct from that of the AEAD API code.  This also allows it
to be disabled if no IV generators (seqiv/echainiv) are enabled.

Remove the obsolete select on RNG2 by SKCIPHER2 as skcipher IV
generators disappeared long ago.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-06-23 16:15:36 +08:00
Herbert Xu
fb28fabfad crypto: algboss - Add missing dependency on RNG2
The testmgr code uses crypto_rng without depending on it.  Add
an explicit dependency to Kconfig.

Also sort the MANAGER2 dependencies alphabetically.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-06-23 16:15:36 +08:00
David Howells
b6d972f689 crypto: af_alg/hash: Fix recvmsg() after sendmsg(MSG_MORE)
If an AF_ALG socket bound to a hashing algorithm is sent a zero-length
message with MSG_MORE set and then recvmsg() is called without first
sending another message without MSG_MORE set to end the operation, an oops
will occur because the crypto context and result doesn't now get set up in
advance because hash_sendmsg() now defers that as long as possible in the
hope that it can use crypto_ahash_digest() - and then because the message
is zero-length, it the data wrangling loop is skipped.

Fix this by handling zero-length sends at the top of the hash_sendmsg()
function.  If we're not continuing the previous sendmsg(), then just ignore
the send (hash_recvmsg() will invent something when called); if we are
continuing, then we finalise the request at this point if MSG_MORE is not
set to get any error here, otherwise the send is of no effect and can be
ignored.

Whilst we're at it, remove the code to create a kvmalloc'd scatterlist if
we get more than ALG_MAX_PAGES - this shouldn't happen.

Fixes: c662b043cd ("crypto: af_alg/hash: Support MSG_SPLICE_PAGES")
Reported-by: syzbot+13a08c0bf4d212766c3c@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/000000000000b928f705fdeb873a@google.com/
Reported-by: syzbot+14234ccf6d0ef629ec1a@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/000000000000c047db05fdeb8790@google.com/
Reported-by: syzbot+4e2e47f32607d0f72d43@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/000000000000bcca3205fdeb87fb@google.com/
Reported-by: syzbot+472626bb5e7c59fb768f@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/000000000000b55d8805fdeb8385@google.com/
Signed-off-by: David Howells <dhowells@redhat.com>
Reported-and-tested-by: syzbot+6efc50cc1f8d718d6cb7@syzkaller.appspotmail.com
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Link: https://lore.kernel.org/r/427646.1686913832@warthog.procyon.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-20 12:10:36 -07:00
David Howells
4380499218 crypto: Fix af_alg_sendmsg(MSG_SPLICE_PAGES) sglist limit
When af_alg_sendmsg() calls extract_iter_to_sg(), it passes MAX_SGL_ENTS as
the maximum number of elements that may be written to, but some of the
elements may already have been used (as recorded in sgl->cur), so
extract_iter_to_sg() may end up overrunning the scatterlist.

Fix this to limit the number of elements to "MAX_SGL_ENTS - sgl->cur".

Note: It probably makes sense in future to alter the behaviour of
extract_iter_to_sg() to stop if "sgtable->nents >= sg_max" instead, but
this is a smaller fix for now.

The bug causes errors looking something like:

BUG: KASAN: slab-out-of-bounds in sg_assign_page include/linux/scatterlist.h:109 [inline]
BUG: KASAN: slab-out-of-bounds in sg_set_page include/linux/scatterlist.h:139 [inline]
BUG: KASAN: slab-out-of-bounds in extract_bvec_to_sg lib/scatterlist.c:1183 [inline]
BUG: KASAN: slab-out-of-bounds in extract_iter_to_sg lib/scatterlist.c:1352 [inline]
BUG: KASAN: slab-out-of-bounds in extract_iter_to_sg+0x17a6/0x1960 lib/scatterlist.c:1339

Fixes: bf63e250c4 ("crypto: af_alg: Support MSG_SPLICE_PAGES")
Reported-by: syzbot+6efc50cc1f8d718d6cb7@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/000000000000b2585a05fdeb8379@google.com/
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: syzbot+6efc50cc1f8d718d6cb7@syzkaller.appspotmail.com
cc: Herbert Xu <herbert@gondor.apana.org.au>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
cc: linux-crypto@vger.kernel.org
cc: netdev@vger.kernel.org
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-06-18 14:26:21 +01:00
Franziska Naepelt
f75bd28beb crypto: hmac - Add missing blank line
The following checkpatch warning has been fixed:
- WARNING: Missing a blank line after declarations

Signed-off-by: Franziska Naepelt <franziska.naepelt@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-06-16 20:30:35 +08:00
David Howells
345ee3e812 algif: Remove hash_sendpage*()
Remove hash_sendpage*() as nothing should now call it since the rewrite of
splice_to_socket()[1].

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Herbert Xu <herbert@gondor.apana.org.au>
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
Link: https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=2dc334f1a63a8839b88483a3e73c0f27c9c1791c [1]
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-12 21:13:23 -07:00
Jakub Kicinski
449f6bc17a Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.

Conflicts:

net/sched/sch_taprio.c
  d636fc5dd6 ("net: sched: add rcu annotations around qdisc->qdisc_sleeping")
  dced11ef84 ("net/sched: taprio: don't overwrite "sch" variable in taprio_dump_class_stats()")

net/ipv4/sysctl_net_ipv4.c
  e209fee411 ("net/ipv4: ping_group_range: allow GID from 2147483648 to 4294967294")
  ccce324dab ("tcp: make the first N SYN RTO backoffs linear")
https://lore.kernel.org/all/20230605100816.08d41a7b@canb.auug.org.au/

No adjacent changes.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-08 11:35:14 -07:00
David Howells
c662b043cd crypto: af_alg/hash: Support MSG_SPLICE_PAGES
Make AF_ALG sendmsg() support MSG_SPLICE_PAGES in the hashing code.  This
causes pages to be spliced from the source iterator if possible.

This allows ->sendpage() to be replaced by something that can handle
multiple multipage folios in a single transaction.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Herbert Xu <herbert@gondor.apana.org.au>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
cc: linux-crypto@vger.kernel.org
cc: netdev@vger.kernel.org
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-06-08 13:42:34 +02:00
David Howells
fb800fa4c1 crypto: af_alg: Convert af_alg_sendpage() to use MSG_SPLICE_PAGES
Convert af_alg_sendpage() to use sendmsg() with MSG_SPLICE_PAGES rather
than directly splicing in the pages itself.

This allows ->sendpage() to be replaced by something that can handle
multiple multipage folios in a single transaction.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Herbert Xu <herbert@gondor.apana.org.au>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
cc: linux-crypto@vger.kernel.org
cc: netdev@vger.kernel.org
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-06-08 13:42:34 +02:00
David Howells
bf63e250c4 crypto: af_alg: Support MSG_SPLICE_PAGES
Make AF_ALG sendmsg() support MSG_SPLICE_PAGES.  This causes pages to be
spliced from the source iterator.

This allows ->sendpage() to be replaced by something that can handle
multiple multipage folios in a single transaction.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Herbert Xu <herbert@gondor.apana.org.au>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
cc: linux-crypto@vger.kernel.org
cc: netdev@vger.kernel.org
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-06-08 13:42:34 +02:00
David Howells
73d7409cfd crypto: af_alg: Indent the loop in af_alg_sendmsg()
Put the loop in af_alg_sendmsg() into an if-statement to indent it to make
the next patch easier to review as that will add another branch to handle
MSG_SPLICE_PAGES to the if-statement.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Herbert Xu <herbert@gondor.apana.org.au>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
cc: linux-crypto@vger.kernel.org
cc: netdev@vger.kernel.org
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-06-08 13:42:34 +02:00
David Howells
c1abe6f570 crypto: af_alg: Use extract_iter_to_sg() to create scatterlists
Use extract_iter_to_sg() to decant the destination iterator into a
scatterlist in af_alg_get_rsgl().  af_alg_make_sg() can then be removed.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Herbert Xu <herbert@gondor.apana.org.au>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
cc: linux-crypto@vger.kernel.org
cc: netdev@vger.kernel.org
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-06-08 13:42:34 +02:00
David Howells
f9e7a5fa51 crypto: af_alg: Pin pages rather than ref'ing if appropriate
Convert AF_ALG to use iov_iter_extract_pages() instead of
iov_iter_get_pages().  This will pin pages or leave them unaltered rather
than getting a ref on them as appropriate to the iterator.

The pages need to be pinned for DIO-read rather than having refs taken on
them to prevent VM copy-on-write from malfunctioning during a concurrent
fork() (the result of the I/O would otherwise end up only visible to the
child process and not the parent).

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Herbert Xu <herbert@gondor.apana.org.au>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
cc: linux-crypto@vger.kernel.org
cc: netdev@vger.kernel.org
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-06-08 13:42:34 +02:00
Roberto Sassu
c3d03e8e35 KEYS: asymmetric: Copy sig and digest in public_key_verify_signature()
Commit ac4e97abce ("scatterlist: sg_set_buf() argument must be in linear
mapping") checks that both the signature and the digest reside in the
linear mapping area.

However, more recently commit ba14a194a4 ("fork: Add generic vmalloced
stack support") made it possible to move the stack in the vmalloc area,
which is not contiguous, and thus not suitable for sg_set_buf() which needs
adjacent pages.

Always make a copy of the signature and digest in the same buffer used to
store the key and its parameters, and pass them to sg_init_one(). Prefer it
to conditionally doing the copy if necessary, to keep the code simple. The
buffer allocated with kmalloc() is in the linear mapping area.

Cc: stable@vger.kernel.org # 4.9.x
Fixes: ba14a194a4 ("fork: Add generic vmalloced stack support")
Link: https://lore.kernel.org/linux-integrity/Y4pIpxbjBdajymBJ@sol.localdomain/
Suggested-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Tested-by: Stefan Berger <stefanb@linux.ibm.com>
2023-06-02 15:36:23 +02:00
Stephan Müller
d23659769a crypto: jitter - correct health test during initialization
With the update of the permanent and intermittent health errors, the
actual indicator for the health test indicates a potential error only
for the one offending time stamp gathered in the current iteration
round. The next iteration round will "overwrite" the health test result.

Thus, the entropy collection loop in jent_gen_entropy checks for
the health test failure upon each loop iteration. However, the
initialization operation checked for the APT health test once for
an APT window which implies it would not catch most errors.

Thus, the check for all health errors is now invoked unconditionally
during each loop iteration for the startup test.

With the change, the error JENT_ERCT becomes unused as all health
errors are only reported with the JENT_HEALTH return code. This
allows the removal of the error indicator.

Fixes: 3fde2fe99a ("crypto: jitter - permanent and intermittent health errors"
)
Reported-by: Joachim Vandersmissen <git@jvdsn.com>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-06-02 18:21:32 +08:00
Eric Biggers
66dd59b7aa crypto: Kconfig - warn about performance overhead of CRYPTO_STATS
Make the help text for CRYPTO_STATS explicitly mention that it reduces
the performance of the crypto API.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-05-24 18:12:33 +08:00