bpf: harden flags check in cgroup_storage_update_elem()

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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: de9cbbaadb ("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>

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Roman Gushchin 2018-09-28 14:33:21 +01:00 • committed by Daniel Borkmann

parent d4ce58082f

commit 4288ea006c

1 changed files with 1 additions and 1 deletions

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kernel/bpf/local_storage.c

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