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| author | John Fastabend <john.fastabend@gmail.com> | 2017-10-18 07:11:44 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-10-20 13:01:29 +0100 |
| commit | 9ef2a8cd5c0dcb8e1f1534615c56eb13b630c363 (patch) | |
| tree | 52d1bcf9c1257a973d3a78cdf54d0d6f005df705 /kernel | |
| parent | fb50df8d32283cd95932a182a46a10070c4a8832 (diff) | |
| download | linux-9ef2a8cd5c0dcb8e1f1534615c56eb13b630c363.tar.bz2 | |
bpf: require CAP_NET_ADMIN when using devmap
Devmap is used with XDP which requires CAP_NET_ADMIN so lets also
make CAP_NET_ADMIN required to use the map.
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/bpf/devmap.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/bpf/devmap.c b/kernel/bpf/devmap.c index 920428d84da2..52e0548ba548 100644 --- a/kernel/bpf/devmap.c +++ b/kernel/bpf/devmap.c @@ -78,6 +78,9 @@ static struct bpf_map *dev_map_alloc(union bpf_attr *attr) int err = -EINVAL; u64 cost; + if (!capable(CAP_NET_ADMIN)) + return ERR_PTR(-EPERM); + /* check sanity of attributes */ if (attr->max_entries == 0 || attr->key_size != 4 || attr->value_size != 4 || attr->map_flags & ~BPF_F_NUMA_NODE) |