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CVE-2026-46059

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Always use NextRIP as vmcb02's NextRIP after first L2 VMRUN For guests with NRIPS disabled, L1 does not provide Next…

Published May 27, 2026EPSS 0.16%

Overview

CVE-2026-46059 is a medium-severity vulnerability. It was published on May 27, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

KVM: nSVM: Always use NextRIP as vmcb02's NextRIP after first L2 VMRUN

For guests with NRIPS disabled, L1 does not provide NextRIP when running

an L2 with an injected soft interrupt, instead it advances the current RIP

before running it. KVM uses the current RIP as the NextRIP in vmcb02 to

emulate a CPU without NRIPS.

However, after L2 runs the first time, NextRIP will be updated by the CPU

and/or KVM, and the current RIP is no longer the correct value to use in

vmcb02. Hence, after save/restore, use the current RIP if and only if a

nested run is pending, otherwise use NextRIP. Give soft_int_next_rip the

same treatment, as it's the same logic, just for a narrower use case.

[sean: give soft_int_next_rip the same treatment]

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

Refgit.kernel.org/stable/c/3428ed1529a1af4cce5aff6c5bd2fcc39ad726bbRefgit.kernel.org/stable/c/69fe1411a5ce678b4da6489b5d2282b4e1d13acfRefgit.kernel.org/stable/c/8d397582f6b5e9fbcf09781c7c934b4910e94a50

How CyberStrike helps

Frequently asked questions

What is CVE-2026-46059?

CVE-2026-46059 is a medium-severity vulnerability. It was published on May 27, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-46059?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-46059?

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-2026-46059?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-46059 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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