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.

CVSS 3.1

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

EPSS

0.5% chance of exploitation in the next 30 days; higher than 40% of CVEs (scores of 2026-10-25)

CWE

CWE-476

Published

2022-08-31

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• debian:debian_linux
• fedoraproject:fedora
• linux:linux_kernel
• redhat:enterprise_linux

References

• https://bugzilla.redhat.com/show_bug.cgi?id=2069736
• https://github.com/torvalds/linux/commit/00b5f37189d24ac3ed46cb7f11742094778c46ce
• https://github.com/torvalds/linux/commit/7ec37d1cbe17d8189d9562178d8b29167fe1c31a
• https://github.com/torvalds/linux/commit/b1e34d325397a33d97d845e312d7cf2a8b646b44
• https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html

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