CVE-2026-23466

HIGH EPSS 2.9%
Published Apr 3, 20262mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Apr 3, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

Description

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)

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
2.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 7

VendorProductVersionRange
linuxlinux_kernel*≥6.12  –  <6.12.78
linuxlinux_kernel*≥6.13  –  <6.18.20
linuxlinux_kernel*≥6.19  –  <6.19.10
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 4

  • git.kernel.org https://git.kernel.org/stable/c/01f2557aa684e514005541e71a3d01f4cd45c170
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/1e9e2640d870d4837bcfdc220cb2c99ae5ee119f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/76326dc06d8793c2c81c31cc0115dbc348de2f88
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e2b424aadecb640f9e037b2891191cf8fd4c64cf
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/01f2557aa684e514005541e71a3d01f4cd45c170
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/1e9e2640d870d4837bcfdc220cb2c99ae5ee119f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/76326dc06d8793c2c81c31cc0115dbc348de2f88
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e2b424aadecb640f9e037b2891191cf8fd4c64cf
    Patch