diff options
| author | Tom Lendacky <thomas.lendacky@amd.com> | 2016-02-26 01:48:13 +0300 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2016-05-01 01:05:51 +0300 |
| commit | 3900078d66b2564fd4e95c49bc967833c3fa12d2 (patch) | |
| tree | b7e78fb3934904a5c5ff1d5223805561a73b416b /drivers | |
| parent | 24a748be97e3579cb760929a1ef2b4c97ba50a17 (diff) | |
| download | linux-3900078d66b2564fd4e95c49bc967833c3fa12d2.tar.xz | |
crypto: ccp - memset request context to zero during import
commit ce0ae266feaf35930394bd770c69778e4ef03ba9 upstream.
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().
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/crypto/ccp/ccp-crypto-aes-cmac.c | 1 | ||||
| -rw-r--r-- | drivers/crypto/ccp/ccp-crypto-sha.c | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/drivers/crypto/ccp/ccp-crypto-aes-cmac.c b/drivers/crypto/ccp/ccp-crypto-aes-cmac.c index bc19c1ee69e0..5c93afb1841a 100644 --- a/drivers/crypto/ccp/ccp-crypto-aes-cmac.c +++ b/drivers/crypto/ccp/ccp-crypto-aes-cmac.c @@ -225,6 +225,7 @@ static int ccp_aes_cmac_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->null_msg = state.null_msg; memcpy(rctx->iv, state.iv, sizeof(rctx->iv)); rctx->buf_count = state.buf_count; diff --git a/drivers/crypto/ccp/ccp-crypto-sha.c b/drivers/crypto/ccp/ccp-crypto-sha.c index 5c9d75bd1558..4c6742fc2146 100644 --- a/drivers/crypto/ccp/ccp-crypto-sha.c +++ b/drivers/crypto/ccp/ccp-crypto-sha.c @@ -219,6 +219,7 @@ 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; |