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CVE-2026-31417

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: net/x25: Fix overflow when accumulating packets Add a check to ensure that `x25_sock.fraglen` does not overflow.

Published Apr 13, 2026linuxCWE-191EPSS 0.45%

Overview

CVE-2026-31417 is a high-severity vulnerability affecting linux linux_kernel. It was published on April 13, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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

net/x25: Fix overflow when accumulating packets

Add a check to ensure that `x25_sock.fraglen` does not overflow.

The `fraglen` also needs to be resetted when purging `fragment_queue` in

`x25_clear_queues()`.

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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.

Affected products

VendorProductVersionsStatus
linuxlinux_kernel>= 2.6.12.1, < 5.10.253Affected

References

Refgit.kernel.org/stable/c/1734bd85c5e0a7a801295b729efb56b009cb8fc3Refgit.kernel.org/stable/c/4e2d1bcef78d21247fe8fef13bc7ed95885df2b5Refgit.kernel.org/stable/c/6e568835ea54a3e1d08e310e34f95d434e739477Refgit.kernel.org/stable/c/798d613afb64b01a203f448fb0f43c37c6afe79dRefgit.kernel.org/stable/c/8c92969c197b91c134be27dc3afb64ab468853a9Refgit.kernel.org/stable/c/96fc16370b0bceb289c7e0479bd0540b81e257aaRefgit.kernel.org/stable/c/a1822cb524e89b4cd2cf0b82e484a2335496a6d9Refgit.kernel.org/stable/c/f953f11ccf4afe6feb635c08145f4240d9a6b544Refcert-portal.siemens.com/productcert/html/ssa-019113.htmlRefcert-portal.siemens.com/productcert/html/ssa-082556.html

How CyberStrike helps

Frequently asked questions

What is CVE-2026-31417?

CVE-2026-31417 is a high-severity vulnerability affecting linux linux_kernel. It was published on April 13, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-31417?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-31417?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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-2026-31417?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-31417 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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