CVE-2026-93177 Linux CVE debrief

Who should care

Linux kernel administrators and developers, particularly those using Vega10-based systems, should verify and apply kernel updates to prevent potential system instability. System operators and security teams responsible for managing Linux kernel deployments should also be aware of this vulnerability and take necessary precautions. This includes reviewing system configurations, monitoring system stability, and verifying kernel versions.

Why it matters

CVE-2026-93177 is a bounds-checking vulnerability in the Linux kernel's drm/amdgpu/pm/powerplay for Vega10 lookup. Linux kernel administrators and developers, particularly those using Vega10-based systems, should verify and apply kernel updates to prevent potential system instability.

• Verify kernel version and apply updates to prevent system instability
• Monitor system stability and voltage index handling to detect potential issues
• Review system configurations to identify potential exposure

Technical summary

The Linux kernel's drm/amdgpu/pm/powerplay has a bounds-checking vulnerability in Vega10 lookup, affecting voltage index handling. The vulnerability has been resolved with the addition of -EINVAL returns for out-of-range indices. This change prevents potential system instability by ensuring that voltage indices are within valid ranges. Linux kernel administrators and developers, particularly those using Vega10-based systems, should verify and apply kernel updates to prevent potential system instability. The vulnerability could lead to system instability if exploited.

Defensive priority

Verify and apply kernel updates; monitor system stability

Recommended defensive actions

• Verify kernel version and apply updates if necessary
• Monitor system stability and voltage index handling
• Review system configurations for potential exposure
• 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
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• 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, specific exploitation details and affected systems require further verification. The vulnerability has been resolved with the addition of -EINVAL returns for out-of-range indices. Linux kernel administrators and developers should verify kernel version and apply updates if necessary to prevent potential system instability.

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.