From: John Fastabend <john.fastab...@gmail.com> 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.fastab...@gmail.com> Acked-by: Daniel Borkmann <dan...@iogearbox.net> --- kernel/bpf/devmap.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/bpf/devmap.c b/kernel/bpf/devmap.c index e093d9a..7d9f32f 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)