CVE-2022-2153

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.

Affected

kernel

CVSS v3.1 NVD

5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.47% chance of exploitation in the next 30 days, 39th percentile

Published

2022-08-31

Updated

2026-10-14

Proof-of-concept exploits (1)

• https://www.openwall.com/lists/oss-security/2022/06/22/1

Security advisories

• https://bugzilla.redhat.com/show_bug.cgi?id=2069736
• torvalds/linux/commit/00b5f37189d24ac3ed46cb7f11742094778c46ce
• https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
• https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html

References

• CVE Record
• NVD entry