Description
In the Linux kernel, the following vulnerability has been resolved:
bpf: Remove tst_run from lwt_seg6local_prog_ops.
The syzbot reported that the lwt_seg6 related BPF ops can be invoked via bpf_test_run() without without entering input_action_end_bpf() first.
Martin KaFai Lau said that self test for BPF_PROG_TYPE_LWT_SEG6LOCAL probably didn't work since it was introduced in commit 04d4b274e2a ("ipv6: sr: Add seg6local action End.BPF"). The reason is that the per-CPU variable seg6_bpf_srh_states::srh is never assigned in the self test case but each BPF function expects it.
Remove test_run for BPF_PROG_TYPE_LWT_SEG6LOCAL.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 004d4b274e2a1a895a0e5dc66158b90a7d463d44, < ea3fae6984ba0f054550e4da22219489c12cd8d4; >= 004d4b274e2a1a895a0e5dc66158b90a7d463d44, < a675524cfbe88fd49c05ff8807a08646983e687c; >= 004d4b274e2a1a895a0e5dc66158b90a7d463d44, < b05c2e25a5c168dbb46b6f7fcb741fd4e4f3b54a; >= 004d4b274e2a1a895a0e5dc66158b90a7d463d44, < e217492f6fa2228ad703ee3006d8fc4e5969fbd4; >= 004d4b274e2a1a895a0e5dc66158b90a7d463d44, < 9cd15511de7c619bbd0f54bb3f28e6e720ded5d6; >= 004d4b274e2a1a895a0e5dc66158b90a7d463d44, < c13fda93aca118b8e5cd202e339046728ee7dddb |
| Linux | Linux | 4.18 |
References
- https://git.kernel.org/stable/c/9cd15511de7c619bbd0f54bb3f28e6e720ded5d6Patch
- https://git.kernel.org/stable/c/a675524cfbe88fd49c05ff8807a08646983e687c
- https://git.kernel.org/stable/c/b05c2e25a5c168dbb46b6f7fcb741fd4e4f3b54a
- https://git.kernel.org/stable/c/c13fda93aca118b8e5cd202e339046728ee7dddbPatch
- https://git.kernel.org/stable/c/e217492f6fa2228ad703ee3006d8fc4e5969fbd4
- https://git.kernel.org/stable/c/ea3fae6984ba0f054550e4da22219489c12cd8d4
Timeline
- Published
- Sep 18, 2024
- Last modified
- Sep 2, 2026
- NVD status
- Modified