- Vulnerability/
- CVE-2024-46754
CVE-2024-46754: bpf: Remove tst_run from lwt_seg6local_prog_ops.
First published: Wed Sep 18 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | <=5.10.223-1<=5.10.226-1<=6.1.115-1<=6.1.119-1 | 6.11.10-1 6.12.5-1 |
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Reference Links
- https://git.kernel.org/stable/c/9cd15511de7c619bbd0f54bb3f28e6e720ded5d6
- https://git.kernel.org/stable/c/c13fda93aca118b8e5cd202e339046728ee7dddb
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-46754
- https://nvd.nist.gov/vuln/detail/CVE-2024-46754
- https://launchpad.net/bugs/cve/CVE-2024-46754
- https://security-tracker.debian.org/tracker/CVE-2024-46754
- https://ubuntu.com/security/CVE-2024-46754
- https://git.kernel.org/linus/c13fda93aca118b8e5cd202e339046728ee7dddb
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