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CVE-2022-1263 Details

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.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://access.redhat.com/security/cve/CVE-2022-1263	CVE	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2072698	CVE	Issue TrackingPatchThird Party Advisory
https://github.com/torvalds/linux/commit/5593473a1e6c743764b08e3b6071cb43b5cfa6c4	CVE	PatchThird Party Advisory
https://www.openwall.com/lists/oss-security/2022/04/07/1	CVE	ExploitMailing ListThird Party Advisory
https://access.redhat.com/security/cve/CVE-2022-1263	[email protected]	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2072698	[email protected]	Issue TrackingPatchThird Party Advisory
https://github.com/torvalds/linux/commit/5593473a1e6c743764b08e3b6071cb43b5cfa6c4	[email protected]	PatchThird Party Advisory
https://www.openwall.com/lists/oss-security/2022/04/07/1	[email protected]	ExploitMailing ListThird Party Advisory

see all 8 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-476	NULL Pointer Dereference	[email protected]
CWE-476	NULL Pointer Dereference	[email protected]

Affected Products

Product	Versions
linux linux kernel	< 5.18 5.18 rc1 5.18 rc2
CPE cpe:2.3:o:linux:linux_kernel:::::::: cpe:2.3:o:linux:linux_kernel:5.18:rc1:::::: cpe:2.3:o:linux:linux_kernel:5.18:rc2:::::: Remediation No remediation found in references.
redhat enterprise linux	8.0 9.0
CPE cpe:2.3:o:redhat:enterprise_linux:8.0:::::::* cpe:2.3:o:redhat:enterprise_linux:9.0:::::::* Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Sep 7, 2022	Initial Analysis	[email protected]