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| author | Andrei Matei <andreimatei1@gmail.com> | 2024-03-26 22:42:44 -0400 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2024-03-27 09:56:17 -0700 |
| commit | a8d89feba7e54e691ca7c4efc2a6264fa83f3687 (patch) | |
| tree | 087d15f18cc99fa5355fe72cb0b91188b6c1d858 /kernel/bpf/verifier.c | |
| parent | 96b98a6552a90690d7bc18dd71b66312c9ded1fb (diff) | |
| download | linux-a8d89feba7e54e691ca7c4efc2a6264fa83f3687.tar.gz | |
bpf: Check bloom filter map value size
This patch adds a missing check to bloom filter creating, rejecting
values above KMALLOC_MAX_SIZE. This brings the bloom map in line with
many other map types.
The lack of this protection can cause kernel crashes for value sizes
that overflow int's. Such a crash was caught by syzkaller. The next
patch adds more guard-rails at a lower level.
Signed-off-by: Andrei Matei <andreimatei1@gmail.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20240327024245.318299-2-andreimatei1@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/bpf/verifier.c')
0 files changed, 0 insertions, 0 deletions