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CVE-2026-31493

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: RDMA/efa: Fix use of completion ctx after free On admin queue completion handling, if the admin command completed with error we…

Published Apr 22, 2026CWE-416EPSS 0.17%

Overview

CVE-2026-31493 is a high-severity vulnerability. It was published on April 22, 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:

RDMA/efa: Fix use of completion ctx after free

On admin queue completion handling, if the admin command completed with

error we print data from the completion context. The issue is that we

already freed the completion context in polling/interrupts handler which

means we print data from context in an unknown state (it might be

already used again).

Change the admin submission flow so alloc/dealloc of the context will be

symmetric and dealloc will be called after any potential use of the

context.

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/0dd98aea1c0c45987fa2dd92f988b0eb1a72c125Refgit.kernel.org/stable/c/1cf95fe5dc5471efea947b4c6f8913da6bc7976eRefgit.kernel.org/stable/c/ef3b06742c8a201d0e83edc9a33a89a4fe3009f8

How CyberStrike helps

Frequently asked questions

What is CVE-2026-31493?

CVE-2026-31493 is a high-severity vulnerability. It was published on April 22, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-31493?

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-2026-31493?

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-2026-31493?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-31493 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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