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| author | Andrii Nakryiko <andrii@kernel.org> | 2021-12-14 04:00:32 +0300 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2021-12-14 17:37:58 +0300 |
| commit | 4581e676d3be9d8c921a48bf18e92c5a8f31bf13 (patch) | |
| tree | a4084e42da2abbc4a1725b9e2d98fa7467cfe12e /tools/lib/bpf/bpf.c | |
| parent | d27a662290963a1cde26cdfdbac71a546c06e94a (diff) | |
| download | linux-4581e676d3be9d8c921a48bf18e92c5a8f31bf13.tar.xz | |
libbpf: Fix potential uninit memory read
In case of BPF_CORE_TYPE_ID_LOCAL we fill out target result explicitly.
But targ_res itself isn't initialized in such a case, and subsequent
call to bpf_core_patch_insn() might read uninitialized field (like
fail_memsz_adjust in this case). So ensure that targ_res is
zero-initialized for BPF_CORE_TYPE_ID_LOCAL case.
This was reported by Coverity static analyzer.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211214010032.3843804-1-andrii@kernel.org
Diffstat (limited to 'tools/lib/bpf/bpf.c')
0 files changed, 0 insertions, 0 deletions