]> git.ipfire.org Git - thirdparty/kernel/linux.git/commit
selftests/bpf: Fix use-after-free in xdp_metadata test
authorIhor Solodrai <ihor.solodrai@linux.dev>
Mon, 23 Feb 2026 19:07:29 +0000 (11:07 -0800)
committerAlexei Starovoitov <ast@kernel.org>
Tue, 24 Feb 2026 16:19:49 +0000 (08:19 -0800)
commitf7ac552be7f13e834a942f64b1ac87e7755b32f4
tree7cde113574630c395575e3b041d1f132ceedd6e4
parentff9511410d5fbdec21a3bbfaa477aa1f56735b33
selftests/bpf: Fix use-after-free in xdp_metadata test

ASAN reported a use-after-free in close_xsk().

The xsk->socket internally references xsk->umem via socket->ctx->umem,
so the socket must be deleted before the umem. Fix the order of
operations in close_xsk().

Acked-by: Mykyta Yatsenko <yatsenko@meta.com>
Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Link: https://lore.kernel.org/r/20260223190736.649171-14-ihor.solodrai@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
tools/testing/selftests/bpf/prog_tests/xdp_metadata.c