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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 | fc1c69a630a3b23f4fb7462be45e081cc0aed124 (patch) | |
| tree | f6ac1fb4e6f480d8b21f396d99b535f252287a2e /crypto | |
| parent | 96388aa3cb424af092138a9ff61f9bde4e9723fc (diff) | |
| download | linux-crypto-fc1c69a630a3b23f4fb7462be45e081cc0aed124.tar.gz linux-crypto-fc1c69a630a3b23f4fb7462be45e081cc0aed124.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: 69fbc1fac7a4 ("[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')
| -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 70a892e8..f624ac98 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; |