CVE-2022-1263

MEDIUM

Linux Kernel < 5.18 - NULL Pointer Dereference

Title source: rule
STIX 2.1

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.

References (4)

Core 4
Core References
Issue Tracking, Patch, Third Party Advisory x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=2072698
Exploit, Mailing List, Third Party Advisory x_refsource_misc
https://www.openwall.com/lists/oss-security/2022/04/07/1
Third Party Advisory x_refsource_misc
https://access.redhat.com/security/cve/CVE-2022-1263

Scores

CVSS v3 5.5
EPSS 0.0007
EPSS Percentile 20.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-476
Status published
Products (4)
linux/linux_kernel 5.18 rc1 (2 CPE variants)
linux/linux_kernel < 5.18
redhat/enterprise_linux 8.0
redhat/enterprise_linux 9.0
Published Aug 31, 2022
Tracked Since Feb 18, 2026