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CVE-2022-0185

Public on 2022-01-24
Modified on 2023-01-18
Description

A heap-based buffer overflow flaw was found in the way the legacy_parse_param function in the Filesystem Context functionality of the Linux kernel verified the supplied parameters length. An unprivileged (in case of unprivileged user namespaces enabled, otherwise needs namespaced CAP_SYS_ADMIN privilege) local user able to open a filesystem that does not support the Filesystem Context API (and thus fallbacks to legacy handling) could use this flaw to escalate their privileges on the system.

Severity
Important
See what this means
CVSS v3 Base Score
7.8
See breakdown
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Kernel-5.10 Extra kernel 2022-01-26 00:57 ALAS2KERNEL-5.10-2022-009
Amazon Linux 2 - Kernel-5.4 Extra kernel 2022-01-26 00:54 ALAS2KERNEL-5.4-2022-021
Amazon Linux 2023 kernel 2023-02-17 20:46 ALAS2023-2023-070
Amazon Linux 2 - Livepatch Extra kernel-livepatch-5.10.82-83.359 2022-03-07 23:48 ALAS2LIVEPATCH-2022-076

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD CVSSv2 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C
NVD CVSSv3 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Red Hat: CVE-2022-0185 Mitre: CVE-2022-0185 FAQs regarding Amazon Linux ALAS/CVE Severity