CVE-2022-4129
- State
- Published
- Severity
- 5.5 Medium
- Published
- Nov 28, 2022
- Updated
- Oct 14, 2026
- Reserved
- Nov 23, 2022
Description
A flaw was found in the Linux kernel's Layer 2 Tunneling Protocol (L2TP). A missing lock when clearing sk_user_data can lead to a race condition and NULL pointer dereference. A local user could use this flaw to potentially crash the system causing a denial of service.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.5 Medium | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | CISA-ADP |
Weaknesses
- CWE-667 >CWE-362->CWE-476
Affected Products
| Product | Versions |
|---|---|
Linux kernel (l2tp)n/a |
|
References
- https://lore.kernel.org/all/20221114191619.124659-1-jakub%40cloudflare.com/t
- https://lore.kernel.org/netdev/20221121085426.21315-1-jakub%40cloudflare.com/t
- FEDORA-2022-e4460c41bcvendor-advisory
- FEDORA-2022-b36cd53dcavendor-advisory
- FEDORA-2022-24041b1667vendor-advisory
- https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
- https://cert-portal.siemens.com/productcert/html/ssa-794697.html
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