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| author | Kumar Kartikeya Dwivedi <memxor@gmail.com> | 2021-03-17 17:28:58 +0530 |
|---|---|---|
| committer | Andrii Nakryiko <andrii.nakryiko@gmail.com> | 2021-03-25 23:31:23 -0700 |
| commit | bbc65156d75ab64180dbf5f1ae93dd4f1a6d3cc8 (patch) | |
| tree | 01f84d4adb94111a7331e7f5219af4bb5bbe6612 /src/netlink.c | |
| parent | c903b3ab70adb8e1afd1c736988838e641c7c0f7 (diff) | |
| download | libbpf-bbc65156d75ab64180dbf5f1ae93dd4f1a6d3cc8.tar.gz | |
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.
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
Diffstat (limited to 'src/netlink.c')
| -rw-r--r-- | src/netlink.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/netlink.c b/src/netlink.c index 4dd73de..d2cb28e 100644 --- a/src/netlink.c +++ b/src/netlink.c @@ -40,7 +40,7 @@ static 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; |