CVE-2026-64273 Linux CVE debrief

Who should care

Linux system administrators and users with iforce devices connected should assess exposure and apply patches. This vulnerability in the Linux kernel's iforce driver can be exploited by a local attacker to potentially escalate privileges or compromise the system. Affected operator, platform, vulnerability-management, and security-team impact should be carefully evaluated.

Why it matters

This vulnerability in the Linux kernel's iforce driver can be exploited by a local attacker to potentially escalate privileges or compromise the system. Linux system administrators and users with iforce devices connected should assess exposure and apply patches.

• Potential local privilege escalation
• Increased risk of device compromise
• Need for patch application and system inventory

Technical summary

The iforce driver in the Linux kernel does not properly validate device-reported force-feedback effect indices, allowing for out-of-bounds access to the core_effects array. This can be exploited by a local attacker to potentially escalate privileges or compromise the system. The vulnerability arises from the driver's incorrect handling of force-feedback effect indices, which can be triggered by a malicious or counterfeit device. The issue can be mitigated by applying patches from Linux kernel maintainers and inventorying Linux systems using iforce devices.

Defensive priority

Apply patches to prevent potential local privilege escalation

Recommended defensive actions

• Apply patches from Linux kernel maintainers
• Inventory Linux systems using iforce devices
• Monitor for suspicious device activity
• 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
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The vulnerability exists in the Linux kernel's iforce driver, specifically in the handling of force-feedback effect indices. An attacker can exploit this by providing a malicious or counterfeit device that sets or clears a bit at an attacker-chosen offset past the object. The issue is caused by the driver's failure to validate device-reported indices, allowing for out-of-bounds access to the core_effects array.

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.