Merge pull request FRRouting#17292 from FRRouting/mergify/bp/stable/1…

…0.1/pr-17245 bgpd: fix crash when polling bgp4v2PathAttrTable (backport FRRouting#17245)
opensourcerouting · Oct 29, 2024 · 680ccfb · 680ccfb
2 parents fd230e4 + 6dcdfd4
commit 680ccfb
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/bgpd/bgp_snmp_bgp4v2.c b/bgpd/bgp_snmp_bgp4v2.c
@@ -933,7 +933,9 @@ static uint8_t *bgp4v2PathAttrTable(struct variable *v, oid name[],
 		else
 			return SNMP_IPADDRESS(bgp_empty_addr);
 	case BGP4V2_NLRI_AS_PATH_CALC_LENGTH:
-		return SNMP_INTEGER(path->attr->aspath->segments->length);
+		return SNMP_INTEGER((path->attr->aspath && path->attr->aspath->segments)
+					    ? path->attr->aspath->segments->length
+					    : 0);
 	case BGP4V2_NLRI_AS_PATH:
 		return aspath_snmp_pathseg(path->attr->aspath, var_len);
 	case BGP4V2_NLRI_PATH_ATTR_UNKNOWN: