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CVE-2022-1158

7.8 · HIGH

A flaw was found in KVM.

Published Aug 5, 2022CWE-416EPSS 0.41%

Overview

CVE-2022-1158 is a high-severity vulnerability. It was published on August 5, 2022 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refbugzilla.redhat.com/show_bug.cgi?id=2069793Refsecurity.netapp.com/advisory/ntap-20230214-0003/Refwww.openwall.com/lists/oss-security/2022/04/08/4Refbugzilla.redhat.com/show_bug.cgi?id=2069793Refsecurity.netapp.com/advisory/ntap-20230214-0003/Refwww.openwall.com/lists/oss-security/2022/04/08/4

How CyberStrike helps

Frequently asked questions

What is CVE-2022-1158?

CVE-2022-1158 is a high-severity vulnerability. It was published on August 5, 2022 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2022-1158?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-1158?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-1158?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-1158 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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