CVE-2022-1055
Public on 2022-03-29
Modified on 2023-01-18
Description
A use-after-free vulnerability was found in the tc_new_tfilter function in net/sched/cls_api.c in the Linux kernel. The availability of local, unprivileged user namespaces allows privilege escalation.
Severity
Medium
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2 - Kernel-5.10 Extra | kernel | 2022-03-07 | ALAS2KERNEL-5.10-2022-011 | Fixed |
| Amazon Linux 2 - Kernel-5.4 Extra | kernel | 2022-04-04 | ALAS2KERNEL-5.4-2022-024 | Fixed |
| Amazon Linux 2023 | kernel | 2023-02-17 | ALAS2023-2023-070 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 6.3 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N |
| NVD | CVSSv2 | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
| NVD | CVSSv3 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |