3.16.40-rc1 review patch. If anyone has any objections, please let me know.
------------------ From: Ondrej Mosnáček <[email protected]> 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 <[email protected]> Signed-off-by: Herbert Xu <[email protected]> Signed-off-by: Ben Hutchings <[email protected]> --- crypto/gcm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/crypto/gcm.c +++ b/crypto/gcm.c @@ -109,7 +109,7 @@ static int crypto_gcm_setkey(struct cryp struct crypto_ablkcipher *ctr = ctx->ctr; struct { be128 hash; - u8 iv[8]; + u8 iv[16]; struct crypto_gcm_setkey_result result;
