Bug 2540401 (CVE-2026-97426)

Summary: CVE-2026-97426 kernel: drm/amdgpu/pm: fix SmartShift bias sysfs store PM refcount on parse error
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, suppawar, vlaad, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in the Linux kernel's AMDGPU driver. When processing input for the SmartShift bias sysfs configuration interface, an input parsing failure causes the driver to release power management access without having first acquired it. A local user with write access to this interface could supply invalid input to trigger an unbalanced reference count, potentially leading to system instability or a Denial of Service (DoS).
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-09-24 16:42:08 UTC
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.