40 lines
1.3 KiB
Diff
Executable File
40 lines
1.3 KiB
Diff
Executable File
From 456b1cced6ba9b06bf028377236e548ccccfbb60 Mon Sep 17 00:00:00 2001
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From: Di Zhu <zhudi21@huawei.com>
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Date: Wed, 16 Jun 2021 09:33:27 +0800
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Subject: [PATCH] libbpf: Use SOCK_CLOEXEC when opening the netlink socket
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Otherwise, there exists a small window between the opening and closing of the
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socket fd where it may leak into processes launched by some other thread.
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Fixes: 949abbe88436 ("libbpf: add function to setup XDP")
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Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
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Link: https://lore.kernel.org/bpf/20210317115857.6536-1-memxor@gmail.com
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Conflict:NA
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Reference:https://github.com/libbpf/libbpf/commit/bbc65156d75ab64180dbf5f1ae93dd4f1a6d3cc8
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---
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src/netlink.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/src/netlink.c b/src/netlink.c
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index 312f887..c2b251c 100644
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--- a/src/netlink.c
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+++ b/src/netlink.c
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@@ -41,7 +41,7 @@ int libbpf_netlink_open(__u32 *nl_pid)
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memset(&sa, 0, sizeof(sa));
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sa.nl_family = AF_NETLINK;
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- sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
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+ sock = socket(AF_NETLINK, SOCK_RAW | SOCK_CLOEXEC, NETLINK_ROUTE);
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if (sock < 0)
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return -errno;
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--
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2.23.0
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