CVE-2026-89997

7.8 HIGH

Published 2026-09-16 · Updated 2026-09-17

AI risk analysis

Summary: This flaw allows a race condition where a device may be resumed after it is suspended during removal, leading to potential use-after-free conditions in certain targets, such as dm-integrity.
Exploitability: Exploitation requires precise timing of resume and remove ioctls, making it moderately difficult. Precondition is the concurrent execution of both ioctls.
Blast radius: If exploited, it could lead to system instability or security issues in affected dm targets, such as use-after-free conditions.
Detection: No reliable host or network indicator is derivable from the published description.
Prioritized remediation: Upgrade to the Linux kernel version 6.2.0 or later.

race-conditionuse-after-freekernel

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD 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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Data: NVD (public domain). Analysis: local $0 model. Defensive use only.