CVE-2022-2153

Public Exploit

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.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.02%
Third-Party Advisory redhat.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory debian.org Third-Party Advisory debian.org Third-Party Advisory openwall.com
Affected: n/a kernel
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=2069736 issue tracking third party advisory patch
https://www.openwall.com/lists/oss-security/2022/06/22/1 mailing list patch exploit third party advisory
https://github.com/torvalds/linux/commit/7ec37d1cbe17d8189d9562178d8b29167fe1c31a third party advisory patch
https://github.com/torvalds/linux/commit/00b5f37189d24ac3ed46cb7f11742094778c46ce third party advisory patch
https://github.com/torvalds/linux/commit/b1e34d325397a33d97d845e312d7cf2a8b646b44 third party advisory patch
https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2022-2153?
CVE-2022-2153 has been scored as a medium severity vulnerability.
How to fix CVE-2022-2153?
To fix CVE-2022-2153, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-2153 being actively exploited in the wild?
It is possible that CVE-2022-2153 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-2153?
CVE-2022-2153 affects n/a kernel.
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