CVE-2022-1263

Public Exploit

Description

A NULL pointer dereference issue was found in KVM when releasing a vCPU with dirty ring support enabled. 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 0.05%
Third-Party Advisory redhat.com Third-Party Advisory redhat.com Third-Party Advisory github.com Third-Party Advisory openwall.com
Affected: n/a Kernel:KVM
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=2072698 issue tracking third party advisory patch
https://www.openwall.com/lists/oss-security/2022/04/07/1 mailing list exploit third party advisory
https://github.com/torvalds/linux/commit/5593473a1e6c743764b08e3b6071cb43b5cfa6c4 third party advisory patch
https://access.redhat.com/security/cve/CVE-2022-1263 third party advisory

Frequently Asked Questions

What is the severity of CVE-2022-1263?
CVE-2022-1263 has been scored as a medium severity vulnerability.
How to fix CVE-2022-1263?
To fix CVE-2022-1263, 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-2022-1263 being actively exploited in the wild?
It is possible that CVE-2022-1263 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-2022-1263?
CVE-2022-1263 affects n/a Kernel:KVM.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.