drm/amd/powerplay: fix VoltageObjectInfo zero-stride loop and OOB read

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-93179
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-17 17:18:13 UTC
Updated2026-09-17 17:18:13 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: drm/amd/powerplay: fix VoltageObjectInfo zero-stride loop and OOB read Reject voltage objects whose usSize is smaller than the header or would advance the cursor past the table end, preventing an infinite loop or heap OOB read when the VBIOS supplies a malformed VoltageObjectInfo table.

Risk And Classification

EPSS: 0.001840000 probability, percentile 0.082590000 (date 2026-09-19)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected c82baa28184356a75c0157129f88af42b2e7b695 83c680de6d41d627c077dedb24f89d9e5be0e2a2 git Not specified
CNA Linux Linux affected c82baa28184356a75c0157129f88af42b2e7b695 5d3cc8e388464f485d0944b87b8f9426e637d082 git Not specified
CNA Linux Linux affected 4.5 Not specified
CNA Linux Linux unaffected 4.5 semver Not specified
CNA Linux Linux unaffected 7.2.6 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/5d3cc8e388464f485d0944b87b8f9426e637d082 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/83c680de6d41d627c077dedb24f89d9e5be0e2a2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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