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(parent: d4ce580) | patch
bpf: harden flags check in cgroup_storage_update_elem()
authorRoman Gushchin <guro@fb.com>
Fri, 28 Sep 2018 13:33:21 +0000 (14:33 +0100)
committerDaniel Borkmann <daniel@iogearbox.net>
Fri, 28 Sep 2018 13:50:23 +0000 (15:50 +0200)
commit4288ea006c73e37c2a4f60dfaef20dd167b8df31
tree6e43c3f3344f8f54baed168fb23f16bffcf4c7aatree | snapshot
parentd4ce58082f206bf6e7d697380c7bc5480a8b0264commit | diff
bpf: harden flags check in cgroup_storage_update_elem()

cgroup_storage_update_elem() shouldn't accept any flags
argument values except BPF_ANY and BPF_EXIST to guarantee
the backward compatibility, had a new flag value been added.

Fixes: de9cbbaadba5 ("bpf: introduce cgroup storage maps")
Signed-off-by: Roman Gushchin <guro@fb.com>
Reported-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
kernel/bpf/local_storage.c diff | blob | history
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