CVE-2026-89823

Last refreshed2026-10-19

Status: UPDATED | Advisory ID: CVE-2026-89823

Key Details

CVE	CVE-2026-89823
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-19
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

In the Linux kernel, the following vulnerability has been resolved:

drm: fix race between partial drm_dev_register() failure and ioctl

If drm_dev_register() fails after registering a minor (e.g. render minor

registered, primary minor fails), userspace could have opened the first

minor and entered a drm_dev_enter() critical section. Since the

unplugged flag was never set, the ioctl proceeds while the error path

tears down device resources.

Fix this by introducing drm_dev_synchronize_unplug(), which sets the

unplugged flag and waits for the SRCU barrier, ensuring all in-flight

drm_dev_enter() critical sections complete before cleanup proceeds; call

it on the error path of drm_dev_register(). (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-89823
CVE	https://www.cve.org/CVERecord?id=CVE-2026-89823

Source

Reference

NVD

CVE