Updated: 2025-08-20 02:45:59.397485
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.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | 0.0 | |
| CVSS Version 3.x | MEDIUM | 5.5 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| AlmaLinux 9.2 ESU | kernel | 5.14.0 | 5.5 | MEDIUM | Ignored | 2024-10-08 10:44:44 | This issue is local-only and DoS‑only: it requires an authenticated user on the system, has no con... | |
| CentOS 6 ELS | kernel | 2.6.32 | 5.5 | MEDIUM | Ignored | 2024-10-08 10:44:45 | Ignored due to low severity | |
| CentOS 7 ELS | kernel | 3.10.0 | 5.5 | MEDIUM | Ignored | 2024-10-08 10:44:44 | Ignored due to low severity | |
| CentOS 8.4 ELS | kernel | 4.18.0 | 5.5 | MEDIUM | Released | CLSA-2023:1690287378 | 2023-07-25 09:10:40 | |
| CentOS 8.5 ELS | kernel | 4.18.0 | 5.5 | MEDIUM | Released | CLSA-2023:1690294029 | 2023-07-25 11:07:01 | |
| CentOS Stream 8 ELS | kernel | 4.18.0 | 5.5 | MEDIUM | Ignored | 2024-10-08 10:44:44 | Ignored due to low severity | |
| CloudLinux 6 ELS | kernel | 2.6.32 | 5.5 | MEDIUM | Ignored | 2024-10-08 10:44:44 | Ignored due to low severity | |
| CloudLinux 7 ELS | kernel | 3.10.0 | 5.5 | MEDIUM | Ignored | 2024-10-08 10:44:44 | Ignored due to low severity | |
| Oracle Linux 6 ELS | kernel | 2.6.32 | 5.5 | MEDIUM | Ignored | 2024-10-08 10:44:44 | Ignored due to low severity | |
| Ubuntu 16.04 ELS | linux-hwe | 4.15.0 | 5.5 | MEDIUM | Released | CLSA-2023:1693903408 | 2023-09-05 05:06:22 |