What’s Vulnerable › Vulnerabilities

CVE-2022-1158

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-08-05 · updated 2026-06-17
• Weakness: CWE-416

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.

Affected products

• Fedoraproject Fedora: 36
• Linux kernel: from 5.2 before 5.4.189; from 5.5 before 5.10.110; from 5.11 before 5.15.33; from 5.16 before 5.16.19; from 5.17 before 5.17.2 — fixed in 5.10.110, 5.15.33, 5.16.19, 5.17.2, 5.4.189
• Red Hat Enterprise Linux: 8.0, 9.0

How to fix

Upgrade to a fixed version: Linux kernel 5.10.110, 5.15.33, 5.16.19, 5.17.2. Check the vendor advisory for mitigations.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=2069793
• https://security.netapp.com/advisory/ntap-20230214-0003/
• https://www.openwall.com/lists/oss-security/2022/04/08/4
• https://bugzilla.redhat.com/show_bug.cgi?id=2069793
• https://security.netapp.com/advisory/ntap-20230214-0003/
• https://www.openwall.com/lists/oss-security/2022/04/08/4

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