diff options
Diffstat (limited to 'net/sctp/sm_statefuns.c')
| -rw-r--r-- | net/sctp/sm_statefuns.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c index eb7905ffe5f2..792e0e2be320 100644 --- a/net/sctp/sm_statefuns.c +++ b/net/sctp/sm_statefuns.c @@ -4114,6 +4114,7 @@ static enum sctp_ierror sctp_sf_authenticate( const union sctp_subtype type, struct sctp_chunk *chunk) { + struct sctp_shared_key *sh_key = NULL; struct sctp_authhdr *auth_hdr; __u8 *save_digest, *digest; struct sctp_hmac *hmac; @@ -4135,9 +4136,11 @@ static enum sctp_ierror sctp_sf_authenticate( * configured */ key_id = ntohs(auth_hdr->shkey_id); - if (key_id != asoc->active_key_id && !sctp_auth_get_shkey(asoc, key_id)) - return SCTP_IERROR_AUTH_BAD_KEYID; - + if (key_id != asoc->active_key_id) { + sh_key = sctp_auth_get_shkey(asoc, key_id); + if (!sh_key) + return SCTP_IERROR_AUTH_BAD_KEYID; + } /* Make sure that the length of the signature matches what * we expect. @@ -4166,7 +4169,7 @@ static enum sctp_ierror sctp_sf_authenticate( sctp_auth_calculate_hmac(asoc, chunk->skb, (struct sctp_auth_chunk *)chunk->chunk_hdr, - GFP_ATOMIC); + sh_key, GFP_ATOMIC); /* Discard the packet if the digests do not match */ if (memcmp(save_digest, digest, sig_len)) { |