1 files changed, 2 insertions, 2 deletions

diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 5e0de3c0eead..2a8773691695 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -1402,14 +1402,14 @@ struct sctp_association *sctp_unpack_cookie(
         sg.length = bodysize;
         key = (char *)ep->secret_key[ep->current_key];
 
-        memset(digest, 0x00, sizeof(digest));
+        memset(digest, 0x00, SCTP_SIGNATURE_SIZE);
         sctp_crypto_hmac(sctp_sk(ep->base.sk)->hmac, key, &keylen, &sg,
                          1, digest);
 
         if (memcmp(digest, cookie->signature, SCTP_SIGNATURE_SIZE)) {
                 /* Try the previous key. */
                 key = (char *)ep->secret_key[ep->last_key];
-                memset(digest, 0x00, sizeof(digest));
+                memset(digest, 0x00, SCTP_SIGNATURE_SIZE);
                 sctp_crypto_hmac(sctp_sk(ep->base.sk)->hmac, key, &keylen,
                                  &sg, 1, digest);