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CVE-2022-2153

Public on 2022-08-31
Modified on 2022-11-02
Description

A flaw was found in the Linux kernel's KVM when attempting to set a SynIC IRQ. This issue makes it possible for a misbehaving VMM to write to SYNIC/STIMER MSRs, causing a NULL pointer dereference. This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a kernel oops condition that results in a denial of service.

Severity
Medium
See what this means
CVSS v3 Base Score
5.5
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 1 kernel 2022-09-30 02:41 ALAS-2022-1636
Amazon Linux 2 - Core kernel 2022-09-01 21:09 ALAS2-2022-1838
Amazon Linux 2 - Core kernel 2022-09-30 07:04 ALAS2-2022-1852
Amazon Linux 2 - Kernel-5.10 Extra kernel 2022-09-30 07:10 ALAS2KERNEL-5.10-2022-020
Amazon Linux 2 - Kernel-5.4 Extra kernel 2022-09-30 07:10 ALAS2KERNEL-5.4-2022-036

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