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| author |   Kumar Kartikeya Dwivedi <memxor@gmail.com> | 2021-03-17 17:28:58 +0530 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-30 14:35:27 +0200 |
| commit | e158238012297bfa601f417ac4d2b55118ccaeac (patch) | |
| tree | efb8a9b3a8c25c998a1da149c6e1103087de5f6b /tools | |
| parent | nfp: flower: fix pre_tun mask id allocation (diff) | |
| download | wireguard-linux-e158238012297bfa601f417ac4d2b55118ccaeac.tar.xz wireguard-linux-e158238012297bfa601f417ac4d2b55118ccaeac.zip | |
libbpf: Use SOCK_CLOEXEC when opening the netlink socket
[ Upstream commit 58bfd95b554f1a23d01228672f86bb489bdbf4ba ]
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.
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
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/lib/bpf/netlink.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/lib/bpf/netlink.c b/tools/lib/bpf/netlink.c index 88416be2bf99..5ec8043c71bc 100644 --- a/tools/lib/bpf/netlink.c +++ b/tools/lib/bpf/netlink.c @@ -37,7 +37,7 @@ 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; |