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CVE-2026-46093

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: mm/vmalloc: take vmap_purge_lock in shrinker decay_va_pool_node() can be invoked concurrently from two paths: __purge_vmap_area…

Published May 27, 2026EPSS 0.13%

Overview

CVE-2026-46093 is a high-severity vulnerability. It was published on May 27, 2026 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

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

mm/vmalloc: take vmap_purge_lock in shrinker

decay_va_pool_node() can be invoked concurrently from two paths:

__purge_vmap_area_lazy() when pools are being purged, and the shrinker via

vmap_node_shrink_scan().

However, decay_va_pool_node() is not safe to run concurrently, and the

shrinker path currently lacks serialization, leading to races and possible

leaks.

Protect decay_va_pool_node() by taking vmap_purge_lock in the shrinker

path to ensure serialization with purge users.

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/12f2341b4c235d5593a433abac201c1c6725787fRefgit.kernel.org/stable/c/687ccdf582169cd680aeaf24cc953807c4cd4345Refgit.kernel.org/stable/c/c15ff206ba78820bf2873d0c668a882e99f4b631Refgit.kernel.org/stable/c/ec05f51f1e65bce95528543eb73fda56fd201d94

How CyberStrike helps

Frequently asked questions

What is CVE-2026-46093?

CVE-2026-46093 is a high-severity vulnerability. It was published on May 27, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-46093?

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-2026-46093?

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-2026-46093?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-46093 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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