CVE-2026-97426: drm/amdgpu/pm: fix SmartShift bias sysfs store PM refcount on parse error
In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu/pm: fix SmartShift bias sysfs store PM refcount on parse error
Return the parse error before acquiring PM access.
Affected Software
Event History
Frequently Asked Questions
What systems are realistically exposed to this issue?
The issue is in the Linux kernel's AMDGPU power-management code and specifically concerns the SmartShift bias sysfs store path. Systems using the affected AMDGPU functionality and exposing that sysfs control are the relevant population.
What input is needed to trigger the vulnerable path?
The issue occurs when the SmartShift bias sysfs store handler receives input that fails parsing. The flaw is that PM access was acquired before the parse error was returned, causing a PM reference-count handling problem.
How can I tell whether the fix is present?
Check whether your kernel includes the stable commits 95e13b25196295654563028861e6802807006ad4 or a4b0c3f5d2287997876d8f711a40d3c0418458d8. The corrected behavior returns the parse error before acquiring PM access.