diff options
| author | Tom Lendacky <thomas.lendacky@amd.com> | 2016-02-25 16:48:13 -0600 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-02-28 03:26:35 +0800 |
| commit | ce0ae266feaf35930394bd770c69778e4ef03ba9 (patch) | |
| tree | ac36429324fa84177f969279f17a274158661c32 /drivers/crypto/ccp/ccp-crypto-sha.c | |
| parent | 9c6bd0c2f103f4748cb4abcaf141f7d11aabfe9f (diff) | |
crypto: ccp - memset request context to zero during import
Since a crypto_ahash_import() can be called against a request context
that has not had a crypto_ahash_init() performed, the request context
needs to be cleared to insure there is no random data present. If not,
the random data can result in a kernel oops during crypto_ahash_update().
Cc: <stable@vger.kernel.org> # 3.14.x-
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/ccp/ccp-crypto-sha.c')
| -rw-r--r-- | drivers/crypto/ccp/ccp-crypto-sha.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/crypto/ccp/ccp-crypto-sha.c b/drivers/crypto/ccp/ccp-crypto-sha.c index 7002c6b283e5..8ef06fad8b14 100644 --- a/drivers/crypto/ccp/ccp-crypto-sha.c +++ b/drivers/crypto/ccp/ccp-crypto-sha.c @@ -233,6 +233,7 @@ static int ccp_sha_import(struct ahash_request *req, const void *in) /* 'in' may not be aligned so memcpy to local variable */ memcpy(&state, in, sizeof(state)); + memset(rctx, 0, sizeof(*rctx)); rctx->type = state.type; rctx->msg_bits = state.msg_bits; rctx->first = state.first; |