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-rw-r--r--proto/ospf/lsupd.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/proto/ospf/lsupd.c b/proto/ospf/lsupd.c
index 64d7dac..1bae1bd 100644
--- a/proto/ospf/lsupd.c
+++ b/proto/ospf/lsupd.c
@@ -251,6 +251,16 @@ ospf_lsupd_rx(struct ospf_lsupd_packet *ps, struct proto *p,
{
struct ospf_lsa_header lsatmp;
struct top_hash_entry *lsadb;
+ u16 lenn;
+
+ lenn=ntohs(lsa->length);
+
+ if((lenn<=sizeof(struct ospf_lsa_header))||(lenn!=(4*(lenn/4))))
+ {
+ log("Received LSA with bad length\n");
+ ospf_neigh_sm(n,INM_BADLSREQ);
+ break;
+ }
/* pg 143 (1) */
if(lsa->checksum!=lsasum_check(lsa,NULL,po))
{