bpf: program: Refuse non-O_RDWR flags in BPF_OBJ_GET

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As for bpf_link, refuse creating a non-O_RDWR fd. Since program fds
currently don't allow modifications this is a precaution, not a
straight up bug fix.

Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210326160501.46234-2-lmb@cloudflare.com

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Lorenz Bauer 2021-03-26 16:05:01 +00:00 • committed by Alexei Starovoitov

parent 25fc94b2f0

commit d37300ed18

1 changed files with 1 additions and 1 deletions

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kernel/bpf/inode.c

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