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(parent: 0e93df4) | patch
tools/bpf_jit_disasm: Fix potential negative tpath index in get_exec_path()
authorRuslan Semchenko <uncleruc2075@gmail.com>
Thu, 12 Jun 2025 13:18:16 +0000 (16:18 +0300)
committerAlexei Starovoitov <ast@kernel.org>
Fri, 13 Jun 2025 02:11:13 +0000 (19:11 -0700)
commitaf91af33c16853c569ca814124781b849886f007
tree3f99e1682d84180271af75b953db6a4727b2dcd6tree
parent0e93df45c7b45e0dd35668019ceb32cd25371715commit | diff
tools/bpf_jit_disasm: Fix potential negative tpath index in get_exec_path()

If readlink() fails, len will be -1, which can cause negative indexing
and undefined behavior. This patch ensures that len is set to 0 on
readlink failure, preventing such issues.

Signed-off-by: Ruslan Semchenko <uncleruc2075@gmail.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/r/20250612131816.1870-1-uncleruc2075@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
tools/bpf/bpf_jit_disasm.c diff | blob | blame | history
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git