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CVE-2026-31435

8.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix read abandonment during retry Under certain circumstances, all the remaining subrequests from a read request will ge…

Published Apr 22, 2026CWE-125EPSS 0.51%

Overview

CVE-2026-31435 is a high-severity vulnerability. It was published on April 22, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, 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:

netfs: Fix read abandonment during retry

Under certain circumstances, all the remaining subrequests from a read

request will get abandoned during retry. The abandonment process expects

the 'subreq' variable to be set to the place to start abandonment from, but

it doesn't always have a useful value (it will be uninitialised on the

first pass through the loop and it may point to a deleted subrequest on

later passes).

Fix the first jump to "abandon:" to set subreq to the start of the first

subrequest expected to need retry (which, in this abandonment case, turned

out unexpectedly to no longer have NEED_RETRY set).

Also clear the subreq pointer after discarding superfluous retryable

subrequests to cause an oops if we do try to access it.

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/3e5fd8f53b575ff2188f82071da19c977ca56c41Refgit.kernel.org/stable/c/7e57523490cd2efb52b1ea97f2e0a74c0fb634cdRefgit.kernel.org/stable/c/8f2f2bd128a8d9edbc1e785760da54ada3df69b7

How CyberStrike helps

Frequently asked questions

What is CVE-2026-31435?

CVE-2026-31435 is a high-severity vulnerability. It was published on April 22, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-31435?

This vulnerability has a CVSS 3.1 base score of 8.8, 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-2026-31435?

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-2026-31435?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-31435 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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