CVE-2026-93080 Linux CVE debrief

Who should care

Linux kernel developers and maintainers, Linux distribution maintainers, and users of Linux-based systems should assess exposure and apply patches as necessary. They should review Linux kernel versions and configurations to ensure proper device unregistration during channel teardown and verify their configurations to prevent potential issues.

Why it matters

A vulnerability in the Linux kernel's firmware: arm_scmi has been resolved, and users should verify their configurations and apply patches as necessary to prevent potential issues.

• Verify Linux kernel versions and configurations to prevent potential issues
• Monitor Linux kernel updates for further information
• Review system configurations to ensure proper device unregistration during channel teardown

Technical summary

The Linux kernel's firmware: arm_scmi has a vulnerability related to transport device teardown lookup. This issue has been resolved by splitting the match helper to prevent protocol drivers from binding to internal transport children and ensuring proper device unregistration during channel teardown. The vulnerability involves SCMI transport devices that are excluded from normal SCMI bus matching, but scmi_device_destroy() uses the same protocol/name lookup to find devices that must be unregistered during channel teardown.

Defensive priority

Medium

Recommended defensive actions

• Review Linux kernel versions and apply patches as necessary
• Verify system configurations and update to prevent potential issues
• Monitor Linux kernel updates for further information
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• 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 source item provide details about the vulnerability and its resolution in the Linux kernel. The NVD entry is currently unavailable. Linux kernel developers should verify their configurations and apply patches as necessary to prevent potential issues. This involves reviewing Linux kernel versions and configurations to ensure proper device unregistration during channel teardown. The vulnerability has been resolved by splitting the match helper to prevent protocol drivers from binding to internal transport children and

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.