CVE-2022-47929
Public on 2023-01-17
Modified on 2024-04-30
Description
In the Linux kernel before 6.1.6, a NULL pointer dereference bug in the traffic control subsystem allows an unprivileged user to trigger a denial of service (system crash) via a crafted traffic control configuration that is set up with "tc qdisc" and "tc class" commands. This affects qdisc_graft in net/sched/sch_api.c.
Severity
Medium
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 1 | kernel | No Fix Planned | ||
| Amazon Linux 2 - Core | kernel | 2023-02-03 | ALAS2-2023-1932 | Fixed |
| Amazon Linux 2 - Kernel-5.10 Extra | kernel | 2023-01-31 | ALAS2KERNEL-5.10-2023-026 | Fixed |
| Amazon Linux 2 - Kernel-5.15 Extra | kernel | 2023-01-31 | ALAS2KERNEL-5.15-2023-013 | Fixed |
| Amazon Linux 2 - Kernel-5.4 Extra | kernel | 2023-02-17 | ALAS2KERNEL-5.4-2023-042 | Fixed |
| Amazon Linux 2023 | kernel | Not Affected |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | CVSSv3 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |