Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.2, < 5.4.189 |
| Fedoraproject | Fedora | 36 |
| Redhat | Enterprise Linux | 8.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2069793ExploitIssue TrackingThird Party Advisory
- https://security.netapp.com/advisory/ntap-20230214-0003/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2022/04/08/4ExploitMailing ListThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2069793ExploitIssue TrackingThird Party Advisory
- https://security.netapp.com/advisory/ntap-20230214-0003/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2022/04/08/4ExploitMailing ListThird Party Advisory
FAQ
What is CVE-2022-1158?
CVE-2022-1158 is a vulnerability with a CVSS score of 7.8 (HIGH). 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...
How severe is CVE-2022-1158?
CVE-2022-1158 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-1158?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Fedoraproject Fedora, Redhat Enterprise Linux.