VULNERABILITY INTELLIGENCE

CVE-2022-1158

CVSS score7.8 HIGH

EPSS probability0.41%

CISA KEVNot currently listed

Published2022-08-05

Last modified2026-06-17

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

Description

A flaw was found in KVM. When updating a guest's page table entry, vm_pgoff was improperly used as the offset to get the page's pfn. As vaddr and vm_pgoff are controllable by user-mode processes, this flaw allows unprivileged local users on the host to write outside the userspace region and potentially corrupt the kernel, resulting in a denial of service condition.

Weakness classification

secalert@redhat.com: CWE-416
nvd@nist.gov: CWE-416

Primary references

secalert@redhat.com — Exploit, Issue Tracking, Third Party Advisory
secalert@redhat.com — Third Party Advisory
secalert@redhat.com — Exploit, Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Mailing List, Third Party Advisory