CVE-2026-89997 (CVSS 7.8)

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.

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CVSS v3.1 Score

7.8

HIGH

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

References

Other References

https://git.kernel.org/stable/c/1ede2bce2bd640605df83db1356fd727159bc9ed https://git.kernel.org/stable/c/36177beff2a9df035991ad8d16ccf8d363ed93ee https://git.kernel.org/stable/c/3b59530b14fde693e41d8e39bc326df6cbf07b76 https://git.kernel.org/stable/c/3f04e6520d9a53adb1d1daf4dc5d31a60fc77d1f https://git.kernel.org/stable/c/44b43ec132f1cf3275ecc182d0c82f50c3c4c3d5 https://git.kernel.org/stable/c/94380ecd5ff9b2a2b9f6e8a0b5c465159ccfaf71 https://git.kernel.org/stable/c/94f3d399c1ddba763c1c5a6501f7375d533d789f https://git.kernel.org/stable/c/9757367bcf1d5d2c50b94d005abca21f3eedd7c3

Frequently Asked Questions

What is CVE-2026-89997? +

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. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-89997? +

CVE-2026-89997 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

How do I check if I'm vulnerable to CVE-2026-89997? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

CVE-2026-89997

Description

CVSS v3.1 Score

References

Other References

Frequently Asked Questions

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