Zeroize the buffer holding the message digest calculated for the consumer before the buffer is released by the hash AF_ALG interface handler. Signed-off-by: Stephan Mueller <smueller@xxxxxxxxxx> --- crypto/algif_hash.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/crypto/algif_hash.c b/crypto/algif_hash.c index 8502462..f75db4c 100644 --- a/crypto/algif_hash.c +++ b/crypto/algif_hash.c @@ -258,6 +258,8 @@ static void hash_sock_destruct(struct sock *sk) struct alg_sock *ask = alg_sk(sk); struct hash_ctx *ctx = ask->private; + memzero_explicit(ctx->result, + crypto_ahash_digestsize(crypto_ahash_reqtfm(&ctx->req))); sock_kfree_s(sk, ctx->result, crypto_ahash_digestsize(crypto_ahash_reqtfm(&ctx->req))); sock_kfree_s(sk, ctx, ctx->len); -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
