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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
See what this means
CVSS v3 Base Score
6.3
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Kernel-5.10 Extra kernel 2022-03-07 23:46 ALAS2KERNEL-5.10-2022-011
Amazon Linux 2 - Kernel-5.4 Extra kernel 2022-04-04 23:40 ALAS2KERNEL-5.4-2022-024
Amazon Linux 2023 kernel 2023-02-17 20:46 ALAS2023-2023-070

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

References

Red Hat: CVE-2022-1055 Mitre: CVE-2022-1055 FAQs regarding Amazon Linux ALAS/CVE Severity