CVE-2026-93177 Linux CVE debrief

Who should care

Linux system administrators, security teams, and developers responsible for maintaining and securing Linux-based systems should assess exposure and prioritize patching. Additionally, operators and platform administrators who manage Linux systems need to review system configurations and apply the patch to prevent potential local privilege escalation. Vulnerability management and security teams should monitor system logs for potential exploitation attempts.

Why it matters

CVE-2026-93177 is a bounds-checking vulnerability in the Linux kernel's drm/amdgpu/pm/powerplay for Vega10 lookup. Linux system administrators and security teams should prioritize verifying and applying the patch to prevent potential local privilege escalation.

• Local privilege escalation is possible if an attacker can trigger the out-of-bounds voltage index calculation
• Verification of system configurations and patch application is necessary to prevent exploitation
• Monitoring system logs for potential exploitation attempts is recommended

Technical summary

The Linux kernel's drm/amdgpu/pm/powerplay for Vega10 lookup did not perform bounds checking on voltage index calculations across nine sites, allowing for potential local privilege escalation. The vulnerability was resolved by returning -EINVAL when any index is out of range. This fix prevents attackers from triggering out-of-bounds voltage index calculations, which could lead to local privilege escalation. Affected Linux system administrators and security teams should prioritize verifying and applying the patch to prevent potential exploitation.

Defensive priority

Linux system administrators and security teams should prioritize verifying and applying the patch to prevent potential local privilege escalation.

Recommended defensive actions

• Verify and apply the patch to the Linux kernel
• Review system configurations and ensure proper bounds checking
• Monitor system logs for potential exploitation attempts
• Perform vulnerability scanning to identify exposed systems
• 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
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its CVSS score of 7.3 and HIGH severity. However, the scope of affected systems and versions is not explicitly stated, requiring further verification.

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.