Ryan Ware 613317bd21 EVM: Use crypto_memneq() for digest comparisons ... 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>		2016-02-12 18:36:47 +11:00
..
evm_crypto.c	evm: provide a function to set the EVM key from the kernel	2015-12-15 08:53:36 -05:00
evm_main.c	EVM: Use crypto_memneq() for digest comparisons	2016-02-12 18:36:47 +11:00
evm_posix_acl.c
evm_secfs.c	evm: provide a function to set the EVM key from the kernel	2015-12-15 08:53:36 -05:00
evm.h	evm: enable EVM when X509 certificate is loaded	2015-12-15 08:50:48 -05:00
Kconfig	evm: EVM_LOAD_X509 depends on EVM	2015-12-15 09:57:21 -05:00
Makefile