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CVE-2026-31713

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: fuse: abort on fatal signal during sync init When sync init is used and the server exits for some reason (error, crash) while p…

Published May 1, 2026EPSS 0.16%

Overview

CVE-2026-31713 is a medium-severity vulnerability. It was published on May 1, 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:

fuse: abort on fatal signal during sync init

When sync init is used and the server exits for some reason (error, crash)

while processing FUSE_INIT, the filesystem creation will hang. The reason

is that while all other threads will exit, the mounting thread (or process)

will keep the device fd open, which will prevent an abort from happening.

This is a regression from the async mount case, where the mount was done

first, and the FUSE_INIT processing afterwards, in which case there's no

such recursive syscall keeping the fd open.

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/0c7fca880a40a209a9c92be14143996d14b93ff6Refgit.kernel.org/stable/c/204aa22a686bfee48daca7db620c1e017615f2ffRefgit.kernel.org/stable/c/300e812b882a174dca675d8028684001ad5826bc

How CyberStrike helps

Frequently asked questions

What is CVE-2026-31713?

CVE-2026-31713 is a medium-severity vulnerability. It was published on May 1, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-31713?

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-2026-31713?

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-2026-31713?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-31713 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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