crypto: af_alg - whitelist mask and type
authorStephan Mueller <smueller@chronox.de>
Tue, 2 Jan 2018 07:55:25 +0000 (08:55 +0100)
committerHerbert Xu <herbert@gondor.apana.org.au>
Fri, 12 Jan 2018 12:03:05 +0000 (23:03 +1100)
commitbb30b8848c85e18ca7e371d0a869e94b3e383bdf
treee6acf772ef0252bf11c2b5035c02110f30b42ceb
parentda1729ce4866be266575a114208c7d5350bf310d
crypto: af_alg - whitelist mask and type

The user space interface allows specifying the type and mask field used
to allocate the cipher. Only a subset of the possible flags are intended
for user space. Therefore, white-list the allowed flags.

In case the user space caller uses at least one non-allowed flag, EINVAL
is returned.

Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
crypto/af_alg.c