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.
Metrics
CVSS 3.1 7.8/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | kernel | kernel 5.18 |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2069793Exploit, Issue Tracking, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20230214-0003/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2022/04/08/4Exploit, Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2069793Exploit, Issue Tracking, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20230214-0003/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2022/04/08/4Exploit, Mailing List, Third Party Advisory
Timeline
- Published
- Aug 5, 2022
- Last modified
- Jun 17, 2026
- NVD status
- Modified