CVE-2022-1263

MediumCVSS 5.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-476

Affected software

Vendor	Product	Versions
n/a	Kernel:KVM	Fixed in kernel v5.18-rc3

References

https://access.redhat.com/security/cve/CVE-2022-1263Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2072698Issue Tracking, Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/5593473a1e6c743764b08e3b6071cb43b5cfa6c4Patch, Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/04/07/1Exploit, Mailing List, Third Party Advisory
https://access.redhat.com/security/cve/CVE-2022-1263Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2072698Issue Tracking, Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/5593473a1e6c743764b08e3b6071cb43b5cfa6c4Patch, Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/04/07/1Exploit, Mailing List, Third Party Advisory

Timeline

Published: Aug 31, 2022
Last modified: Jun 17, 2026
NVD status: Modified

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