xavi/android_kernel_m2note/security/integrity, branch ng-7.1.2

xattr: Constify ->name member of "struct xattr".

2019-07-06T10:00:41+00:00

Since everybody sets kstrdup()ed constant string to "struct xattr"->name but nobody modifies "struct xattr"->name , we can omit kstrdup() and its failure checking by constifying ->name member of "struct xattr". Change-Id: I84a47af13e3c77b394218cc12ac8901d87b0fd69 Signed-off-by: Tetsuo Handa Reviewed-by: Joel Becker [ocfs2] Acked-by: Serge E. Hallyn Acked-by: Casey Schaufler Acked-by: Mimi Zohar Reviewed-by: Paul Moore Tested-by: Paul Moore Acked-by: Eric Paris Signed-off-by: James Morris

EVM: Use crypto_memneq() for digest comparisons

2017-06-17T13:45:26+00:00

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 Signed-off-by: Ryan Ware Cc: stable@vger.kernel.org Signed-off-by: Mimi Zohar Signed-off-by: James Morris Cc: Jason A. Donenfeld Signed-off-by: Willy Tarreau

first commit

2016-08-15T02:19:42+00:00