Go to homepageCyberStrike

Menu

Star on GitHub · 3.5k
Sign inDownload

CVE-2026-89970

9.8 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: nvmet-auth: Synchronize timeout work during SQ teardown nvmet_auth_sq_free() cancels auth_expired_work with cancel_delayed_work().

Published Sep 16, 2026EPSS 0.80%

Overview

CVE-2026-89970 is a critical-severity vulnerability. It was published on September 16, 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:

nvmet-auth: Synchronize timeout work during SQ teardown

nvmet_auth_sq_free() cancels auth_expired_work with

cancel_delayed_work(). If the work has already started, cancellation does

not wait for the callback. Transport teardown can consequently free or

reuse the queue containing struct nvmet_sq while

nvmet_auth_expired_work() still accesses that SQ.

Add a teardown-specific helper that synchronously drains the delayed work

before freeing authentication state, and use it from nvmet_sq_destroy().

Keep the non-synchronous helper for in-band authentication state cleanup,

where the SQ owner remains alive.

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/664022fa1c93f4eba09ef5ee02411b9709dd7a93Refgit.kernel.org/stable/c/7555ddd60af72df2862dd8f9b730a9848577eddaRefgit.kernel.org/stable/c/c17c87bde6d6f5252a6a6f0a94b2430164aa28d5Refgit.kernel.org/stable/c/c3c126a6142a1335bc8c34a5607c39cf01daf295Refgit.kernel.org/stable/c/eaa948c0e19b1bb2d93262207bca0c3d19cc3406Refgit.kernel.org/stable/c/eb4f9127a2b8a152743f1ee597627e2f69cb54fe

How CyberStrike helps

Frequently asked questions

What is CVE-2026-89970?

CVE-2026-89970 is a critical-severity vulnerability. It was published on September 16, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-89970?

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-2026-89970?

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-2026-89970?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-89970 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.

Related CRITICAL CVEs from 2026

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999
CyberStrike v2 is here — more intelligence, greater reach