Ryan Ware 37510515d6 EVM: Use crypto_memneq() for digest comparisons ... commit 613317bd212c585c20796c10afe5daaa95d4b0a1 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> Cc: stable@vger.kernel.org Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com> Signed-off-by: James Morris <james.l.morris@oracle.com> Cc: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Willy Tarreau <w@1wt.eu>		2017-06-08 00:46:46 +02:00
..
evm	EVM: Use crypto_memneq() for digest comparisons	2017-06-08 00:46:46 +02:00
ima	ima: introduce ima_kernel_read()	2014-06-26 15:12:37 -04:00
Kconfig	ima: digital signature verification using asymmetric keys	2013-02-06 21:22:18 -05:00
Makefile	ima: digital signature verification using asymmetric keys	2013-02-06 21:22:18 -05:00
digsig.c	ima: digital signature verification using asymmetric keys	2013-02-06 21:22:18 -05:00
digsig_asymmetric.c	ima: digital signature verification using asymmetric keys	2013-02-06 21:22:18 -05:00
iint.c	ima: per hook cache integrity appraisal status	2013-01-22 16:10:36 -05:00
integrity.h	ima: digital signature verification using asymmetric keys	2013-02-06 21:22:18 -05:00