linux

Files

Ryan Ware 8592536bcf EVM: Use crypto_memneq() for digest comparisons

commit 613317bd21 upstream.

This patch fixes vulnerability CVE-2016-2085.  The problem exists
because the vm_verify_hmac() function includes a use of memcmp().
Unfortunately, this allows timing side channel attacks; specifically
a MAC forgery complexity drop from 2^128 to 2^12.  This patch changes
the memcmp() to the cryptographically safe crypto_memneq().

Reported-by: Xiaofei Rex Guo <xiaofei.rex.guo@intel.com>
Signed-off-by: Ryan Ware <ware@linux.intel.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2016-02-17 12:31:04 -08:00

evm_crypto.c

KEYS: Merge the type-specific data with the payload data

2015-10-21 15:18:36 +01:00

evm_main.c

EVM: Use crypto_memneq() for digest comparisons

2016-02-17 12:31:04 -08:00

evm_posix_acl.c

ima: fix script messages

2013-10-25 13:17:19 -04:00

evm_secfs.c

security: integrity: Use a more current logging style