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CVE-2026-74427

9.8 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: afs: Fix netns teardown to cancel the preallocation charger Fix the teardown of an afs network namespace to make sure it cancel…

Published Aug 15, 2026EPSS 0.76%

Overview

CVE-2026-74427 is a critical-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. 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:

afs: Fix netns teardown to cancel the preallocation charger

Fix the teardown of an afs network namespace to make sure it cancels the

work item that keeps the preallocated rxrpc call/conn/peer queue charged

before incoming calls are disabled (i.e. listen 0).

Also, if net->live is false because the afs netns is being deleted, make

afs_charge_preallocation() skip charging and make afs_rx_new_call() avoid

requeuing the charger.

(This was found by AI review).

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/47694fbc9d24ab6bf210f91e8efe06a10a478064Refgit.kernel.org/stable/c/59e8b7652f6cbfb62d377ead0ad553c1b4e39a7aRefgit.kernel.org/stable/c/63ccaf1bdf8be2330f47f9b5b233dd3fd04acbd9Refgit.kernel.org/stable/c/85d5fb80fe4f0cc836b6df83f26de204fe102ff7Refgit.kernel.org/stable/c/a33975ff2b6ea47b8f29956403374b1cdd057539Refgit.kernel.org/stable/c/b83ecf80e28afb7b6595ba79932e77ca68a5a83dRefgit.kernel.org/stable/c/eec89c5f8e1adc1de4824042ef75f62aed804153Refgit.kernel.org/stable/c/f5096e18b6b7fbd1c2a1942e275a51bcfdfb2ad1

How CyberStrike helps

Frequently asked questions

What is CVE-2026-74427?

CVE-2026-74427 is a critical-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-74427?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-74427?

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-2026-74427?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-74427 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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