CVE-2026-23466

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-23466

Key Details

CVE	CVE-2026-23466
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-16
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/xe: Open-code GGTT MMIO access protection

GGTT MMIO access is currently protected by hotplug (drm_dev_enter),

which works correctly when the driver loads successfully and is later

unbound or unloaded. However, if driver load fails, this protection is

insufficient because drm_dev_unplug() is never called.

Additionally, devm release functions cannot guarantee that all BOs with

GGTT mappings are destroyed before the GGTT MMIO region is removed, as

some BOs may be freed asynchronously by worker threads.

To address this, introduce an open-coded flag, protected by the GGTT

lock, that guards GGTT MMIO access. The flag is cleared during the

dev_fini_ggtt devm release function to ensure MMIO access is disabled

once teardown begins.

(cherry picked from commit 4f3a998a173b4325c2efd90bdadc6ccd3ad9a431) (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-23466
CVE	https://www.cve.org/CVERecord?id=CVE-2026-23466

Source

Reference

NVD

CVE