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CVE-2021-3347

Public on 2021-01-29
Modified on 2024-03-01
Description

A flaw was found in the Linux kernel. A use-after-free memory flaw in the Fast Userspace Mutexes functionality allowing a local user to crash the system or escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Severity
Important
See what this means
CVSS v3 Base Score
7.0
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 1 kernel 2021-02-16 00:13 ALAS-2021-1480
Amazon Linux 2 - Core kernel 2021-02-17 18:07 ALAS2-2021-1600
Amazon Linux 2 - Kernel-5.4 Extra kernel 2022-01-20 19:56 ALAS2KERNEL-5.4-2022-020
Amazon Linux 2 - Livepatch Extra kernel-livepatch-4.14.209-160.335 2021-02-22 19:03 ALAS2LIVEPATCH-2021-040
Amazon Linux 2 - Livepatch Extra kernel-livepatch-4.14.209-160.339 2021-02-22 19:03 ALAS2LIVEPATCH-2021-039
Amazon Linux 2 - Livepatch Extra kernel-livepatch-4.14.214-160.339 2021-02-22 19:03 ALAS2LIVEPATCH-2021-041

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 7.0 CVSS:3.1/AV:L/AC:H/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 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H