CVE-2025-68244
kernel: drm/i915: Avoid lock inversion when pinning to GGTT on CHV/BXT+VTD
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 16, 2025
Updated · June 30, 2026
Description
A lock inversion vulnerability was found in the Intel i915 graphics driver in the Linux kernel. On Cherry View processors or Broxton SoCs with VT-d enabled, pinning a VMA to GGTT triggers stop_machine() from intel_ggtt_bind_vma(), creating a circular locking dependency between reservation_ww_class_mutex and cpu_hotplug_lock. This can result in deadlock conditions.
Statement
This affects Intel Cherry View and Broxton graphics with VT-d enabled. These are older mobile/embedded platforms; modern Intel graphics are not impacted. The issue causes system hangs rather than memory corruption.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-833 · Deadlock