CVE-2022-1263

medium

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

https://www.openwall.com/lists/oss-security/2022/04/07/1

https://github.com/torvalds/linux/commit/5593473a1e6c743764b08e3b6071cb43b5cfa6c4

https://access.redhat.com/security/cve/CVE-2022-1263

https://bugzilla.redhat.com/show_bug.cgi?id=2072698

Details

Source: MITRE

Published: 2022-08-31

Updated: 2022-09-07

Type: CWE-476

CVSS v3

Base Score: 5.5

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

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM