CVE-2026-93178 Linux CVE debrief

Who should care

Linux kernel developers and administrators who manage Linux systems with the drm/amdgpu/pm/powerplay component should verify and apply the patch to prevent potential out-of-range voltage index access. The vulnerability could lead to potential security issues if not patched. Linux kernel developers and administrators should review system configurations and ensure that the drm/amdgpu/pm/powerplay component is properly configured.

Why it matters

The Linux kernel vulnerability in drm/amdgpu/pm/powerplay could lead to potential security issues if not patched. Linux kernel developers and administrators should verify and apply the patch.

• Verify and apply the patch to prevent potential out-of-range voltage index access
• Review system configurations and ensure that the drm/amdgpu/pm/powerplay component is properly configured

Technical summary

The Linux kernel has a vulnerability in the drm/amdgpu/pm/powerplay component. A bounds check is missing for voltage index in SMU7 lookup, which could lead to an out-of-range index being used. This issue has been resolved. The vulnerability could lead to potential security issues if not patched. Linux kernel developers and administrators should verify and apply the patch to prevent potential out-of-range voltage index access. The patch is available from official Linux kernel sources. The vulnerability has been resolved in the Linux kernel.

Defensive priority

Verify and apply the patch to prevent potential out-of-range voltage index access.

Recommended defensive actions

• Verify the Linux kernel version and apply the patch if necessary
• Review system configurations and ensure that the drm/amdgpu/pm/powerplay component is properly configured
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record and NVD entry provide details on the vulnerability. However, the scope of affected systems and versions is not explicitly stated. The Linux kernel developers and administrators should verify the Linux kernel version and apply the patch if necessary. The patch is available from official Linux kernel sources. The vulnerability has been resolved in the Linux kernel.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.