From 456b1cced6ba9b06bf028377236e548ccccfbb60 Mon Sep 17 00:00:00 2001
From: Di Zhu <zhudi21@huawei.com>
Date: Wed, 16 Jun 2021 09:33:27 +0800
Subject: [PATCH] libbpf: Use SOCK_CLOEXEC when opening the netlink socket
 Otherwise, there exists a small window between the opening and closing of the
 socket fd where it may leak into processes launched by some other thread.
 
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Fixes: 949abbe88436 ("libbpf: add function to setup XDP")
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/bpf/20210317115857.6536-1-memxor@gmail.com

Conflict:NA
Reference:https://github.com/libbpf/libbpf/commit/bbc65156d75ab64180dbf5f1ae93dd4f1a6d3cc8
---
 src/netlink.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/netlink.c b/src/netlink.c
index 312f887..c2b251c 100644
--- a/src/netlink.c
+++ b/src/netlink.c
@@ -41,7 +41,7 @@ int libbpf_netlink_open(__u32 *nl_pid)
 	memset(&sa, 0, sizeof(sa));
 	sa.nl_family = AF_NETLINK;
 
-	sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
+	sock = socket(AF_NETLINK, SOCK_RAW | SOCK_CLOEXEC, NETLINK_ROUTE);
 	if (sock < 0)
 		return -errno;
 
-- 
2.23.0