Merge pull request #15330 from FRRouting/mergify/bp/stable/9.1/pr-15325

bgpd: Do not show TCP MSS if the socket is broken (backport #15325)
FRRouting · Feb 8, 2024 · 44e0f76 · 44e0f76
2 parents da5aeee + 0c679ff
commit 44e0f76
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/lib/sockopt.c b/lib/sockopt.c
@@ -673,6 +673,9 @@ int sockopt_tcp_mss_get(int sock)
 	int tcp_maxseg = 0;
 	socklen_t tcp_maxseg_len = sizeof(tcp_maxseg);
 
+	if (sock < 0)
+		return 0;
+
 	ret = getsockopt(sock, IPPROTO_TCP, TCP_MAXSEG, &tcp_maxseg,
 			 &tcp_maxseg_len);
 	if (ret != 0) {