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CVE-2026-89997

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: dm: fix resume-vs-remove race If the user issues the resume ioctl and the remove ioctl at the same time, it may be possible tha…

Published Sep 16, 2026EPSS 0.16%

Overview

CVE-2026-89997 is a high-severity vulnerability. It was published on September 16, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. 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:

dm: fix resume-vs-remove race

If the user issues the resume ioctl and the remove ioctl at the same

time, it may be possible that the device is resumed after it is suspended

in __dm_destroy. The result is that the table is destroyed without

calling the postsuspend method.

Dm targets expect that they may be removed only after the postsuspend

method method was called. If we break this expectation, it can cause

misbehavior in various targets. For example - in the dm-integrity target,

the reboot notifier is not unregistered, leading to use-after-free.

Fix this bug by refusing to resume if the device is being destroyed.

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/1ede2bce2bd640605df83db1356fd727159bc9edRefgit.kernel.org/stable/c/36177beff2a9df035991ad8d16ccf8d363ed93eeRefgit.kernel.org/stable/c/3b59530b14fde693e41d8e39bc326df6cbf07b76Refgit.kernel.org/stable/c/3f04e6520d9a53adb1d1daf4dc5d31a60fc77d1fRefgit.kernel.org/stable/c/44b43ec132f1cf3275ecc182d0c82f50c3c4c3d5Refgit.kernel.org/stable/c/94380ecd5ff9b2a2b9f6e8a0b5c465159ccfaf71Refgit.kernel.org/stable/c/94f3d399c1ddba763c1c5a6501f7375d533d789fRefgit.kernel.org/stable/c/9757367bcf1d5d2c50b94d005abca21f3eedd7c3

How CyberStrike helps

Frequently asked questions

What is CVE-2026-89997?

CVE-2026-89997 is a high-severity vulnerability. It was published on September 16, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-89997?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-89997?

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-2026-89997?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-89997 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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