diff options
Diffstat (limited to 'ospf6d/ospf6_auth_trailer.c')
| -rw-r--r-- | ospf6d/ospf6_auth_trailer.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/ospf6d/ospf6_auth_trailer.c b/ospf6d/ospf6_auth_trailer.c index 77ac4a1877..e54f6784e8 100644 --- a/ospf6d/ospf6_auth_trailer.c +++ b/ospf6d/ospf6_auth_trailer.c @@ -120,7 +120,13 @@ void ospf6_auth_hdr_dump_recv(struct ospf6_header *ospfh, uint16_t length, ospf6_at_hdr = (struct ospf6_auth_hdr *)((uint8_t *)ospfh + oh_len); at_hdr_len = ntohs(ospf6_at_hdr->length); - hash_len = at_hdr_len - OSPF6_AUTH_HDR_MIN_SIZE; + hash_len = at_hdr_len - (uint16_t)OSPF6_AUTH_HDR_MIN_SIZE; + if (hash_len > KEYCHAIN_MAX_HASH_SIZE) { + zlog_debug( + "Specified value for hash_len %u is greater than expected %u", + hash_len, KEYCHAIN_MAX_HASH_SIZE); + return; + } memcpy(temp, ospf6_at_hdr->data, hash_len); temp[hash_len] = '\0'; zlog_debug("OSPF6 Authentication Trailer"); |