crypto: algif_rng - zeroize buffer with random data

Due to the change to RNGs to always return zero in success case, the RNG
interface must zeroize the buffer with the length provided by the
caller.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/crypto/algif_rng.c b/crypto/algif_rng.c
index 67f612cfed97b3ac31c39b45c63afc97f0a675a9..a34617359cd9292b96cd105438ff1e2e9c298fbe 100644 (file)
--- a/crypto/algif_rng.c
+++ b/crypto/algif_rng.c
@@ -87,7 +87,7 @@ static int rng_recvmsg(struct kiocb *unused, struct socket *sock,
                return genlen;
 
        err = memcpy_to_msg(msg, result, len);
-       memzero_explicit(result, genlen);
+       memzero_explicit(result, len);
 
        return err ? err : len;
 }