From b963f0a75bd6c95fbfa0ac17e46ab1f9d1a787c4 Mon Sep 17 00:00:00 2001 From: Stephen Gallagher Date: Tue, 14 Nov 2023 04:23:28 -0500 Subject: [PATCH 1/2] unix: ignore ifaddrs with NULL ifa_addr (#4218) Passing this to uv__is_ipv6_link_local() is causing a segmentation fault. Note that the documentation for getifaddrs() explicitly states that this value may be NULL. Signed-off-by: Stephen Gallagher --- src/unix/tcp.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/src/unix/tcp.c b/src/unix/tcp.c index a6b53e5913271d0c83e1d7f7e4cb8140f5f3936d..29f4532e747db50146a8b821389f4d45304c5cd0 100644 --- a/src/unix/tcp.c +++ b/src/unix/tcp.c @@ -233,8 +233,9 @@ static int uv__ipv6_link_local_scope_id(void) { return 0; for (p = ifa; p != NULL; p = p->ifa_next) - if (uv__is_ipv6_link_local(p->ifa_addr)) - break; + if (p->ifa_addr != NULL) + if (uv__is_ipv6_link_local(p->ifa_addr)) + break; rv = 0; if (p != NULL) { -- 2.41.0