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| author | Ondrej Mosnáček <omosnacek@gmail.com> | 2016-09-23 10:47:32 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-10-02 22:31:52 +0800 |
| commit | 50d2e6dc1f83db0563c7d6603967bf9585ce934b (patch) | |
| tree | 67e18e631fd217f787b39a821046b77356022e6f /crypto/gcm.c | |
| parent | 5ecf8ef9103cb018cbd82b6eace529ff4c5b5c66 (diff) | |
| download | lwn-50d2e6dc1f83db0563c7d6603967bf9585ce934b.tar.gz lwn-50d2e6dc1f83db0563c7d6603967bf9585ce934b.zip | |
crypto: gcm - Fix IV buffer size in crypto_gcm_setkey
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>
Diffstat (limited to 'crypto/gcm.c')
| -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 70a892e87ccb..f624ac98c94e 100644 --- a/crypto/gcm.c +++ b/crypto/gcm.c @@ -117,7 +117,7 @@ static int crypto_gcm_setkey(struct crypto_aead *aead, const u8 *key, struct crypto_skcipher *ctr = ctx->ctr; struct { be128 hash; - u8 iv[8]; + u8 iv[16]; struct crypto_gcm_setkey_result result; |