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CVE-2026-23229

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: crypto: virtio - Add spinlock protection with virtqueue notification When VM boots with one virtio-crypto PCI device and builti…

Published Feb 18, 2026EPSS 0.14%

Overview

CVE-2026-23229 is a medium-severity vulnerability. It was published on February 18, 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:

crypto: virtio - Add spinlock protection with virtqueue notification

When VM boots with one virtio-crypto PCI device and builtin backend,

run openssl benchmark command with multiple processes, such as

openssl speed -evp aes-128-cbc -engine afalg -seconds 10 -multi 32

openssl processes will hangup and there is error reported like this:

virtio_crypto virtio0: dataq.0:id 3 is not a head!

It seems that the data virtqueue need protection when it is handled

for virtio done notification. If the spinlock protection is added

in virtcrypto_done_task(), openssl benchmark with multiple processes

works well.

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/49c57c6c108931a914ed94e3c0ddb974008260a3Refgit.kernel.org/stable/c/552475d0b6cece73a52c0fa5faa0ce45e99df74bRefgit.kernel.org/stable/c/8ee8ccfd60bf17cbdab91069d324b5302f4f3a30Refgit.kernel.org/stable/c/b505047ffc8057555900d2d3a005d033e6967382Refgit.kernel.org/stable/c/c0a0ded3bb7fd45f720faa48449a930153257d3aRefgit.kernel.org/stable/c/c9e594194795c86ca753ad6ed64c2762e9309d0dRefgit.kernel.org/stable/c/d6f0d586808689963e58fd739bed626ff5013b24Refgit.kernel.org/stable/c/e69a7b0a71b6561b3b6459f1fded8d589f2e8ac2Refcert-portal.siemens.com/productcert/html/ssa-253495.html

How CyberStrike helps

Frequently asked questions

What is CVE-2026-23229?

CVE-2026-23229 is a medium-severity vulnerability. It was published on February 18, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-23229?

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-2026-23229?

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-2026-23229?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-23229 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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