Merge pull request FRRouting#17351 from FRRouting/mergify/bp/stable/9…

….0/pr-17305 bgpd: Treat numbered community-list only if it's in a range 1-500 (backport FRRouting#17305)
opensourcerouting · Nov 5, 2024 · 77fa604 · 77fa604
2 parents 24fe881 + 316665e
commit 77fa604
Show file tree

Hide file tree

Showing 2 changed files with 5 additions and 1 deletion.
diff --git a/bgpd/bgp_clist.c b/bgpd/bgp_clist.c
@@ -181,7 +181,7 @@ community_list_insert(struct community_list_handler *ch, const char *name,
 	}
 
 	/* In case of name is all digit character */
-	if (i == strlen(name)) {
+	if (i == strlen(name) && number <= COMMUNITY_LIST_NUMBER_MAX) {
 		new->sort = COMMUNITY_LIST_NUMBER;
 
 		/* Set access_list to number list. */

diff --git a/bgpd/bgp_clist.h b/bgpd/bgp_clist.h
@@ -20,6 +20,10 @@
 /* Number and string based community-list name.  */
 #define COMMUNITY_LIST_STRING          0
 #define COMMUNITY_LIST_NUMBER          1
+/* The numbered community-list (including large/ext communities)
+ * have a range between 1-500.
+ */
+#define COMMUNITY_LIST_NUMBER_MAX 500
 
 #define COMMUNITY_SEQ_NUMBER_AUTO     -1