diff options
| author | Ondrej Mosnáček <omosnacek@gmail.com> | 2016-09-23 10:47:32 +0200 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2017-02-23 03:54:07 +0000 |
| commit | 615e796a8828fc251b2902fbe5ba48b952e25386 (patch) | |
| tree | 54dc74e6cef33857c35337887190364adff2fe19 /crypto | |
| parent | cbe308a4471f9dc65d1059bd2f9e242ddcf4b548 (diff) | |
crypto: gcm - Fix IV buffer size in crypto_gcm_setkey
commit 50d2e6dc1f83db0563c7d6603967bf9585ce934b upstream.
The cipher block size for GCM is 16 bytes, and thus the CTR transform
used in crypto_gcm_setkey() will also expect a 16-byte IV. However,
the code currently reserves only 8 bytes for the IV, causing
an out-of-bounds access in the CTR transform. This patch fixes
the issue by setting the size of the IV buffer to 16 bytes.
Fixes: 84c911523020 ("[CRYPTO] gcm: Add support for async ciphers")
Signed-off-by: Ondrej Mosnacek <omosnacek@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/gcm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/gcm.c b/crypto/gcm.c index d2a0f7371cf0..49b6fb20cceb 100644 --- a/crypto/gcm.c +++ b/crypto/gcm.c @@ -109,7 +109,7 @@ static int crypto_gcm_setkey(struct crypto_aead *aead, const u8 *key, struct crypto_ablkcipher *ctr = ctx->ctr; struct { be128 hash; - u8 iv[8]; + u8 iv[16]; struct crypto_gcm_setkey_result result; |