CVE-2026-90041 Linux CVE debrief

Who should care

Linux kernel developers and maintainers, Linux distribution maintainers, System administrators responsible for Linux systems, and security teams should review and apply kernel patches to fix the HID: sony driver vulnerability. They should also verify system configurations to prevent exploitation and monitor Linux kernel updates for potential security patches.

Why it matters

The CVE-2026-90041 vulnerability in the Linux kernel's HID: sony driver requires attention from Linux kernel developers, maintainers, and system administrators. The vulnerability can cause a use-after-free condition, potentially leading to privilege escalation. Defenders should review and apply kernel patches, monitor Linux kernel updates, and verify system configurations to prevent exploitation.

• Potential privilege escalation on affected Linux systems
• Possible system crashes or instability due to use-after-free condition
• Need for kernel patching and system updates to mitigate the vulnerability

Technical summary

The Linux kernel's HID: sony driver has a vulnerability that can cause a use-after-free condition when input device registration fails during probe. This issue can potentially allow for privilege escalation. The vulnerability was found by 0sec using automated source analysis and verified against HID input registration and probe unwind paths. The driver-private cleanup is not run on every probe failure path, leaving the list node linked and allowing the next matching controller to traverse freed memory. Initialize the list node and device ID to inactive states to prevent this issue.

Defensive priority

High

Recommended defensive actions

• Review and apply the kernel patches to fix the HID: sony driver vulnerability
• Monitor Linux kernel updates for potential security patches
• Verify system configurations to prevent exploitation
• 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
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance

Evidence notes

The vulnerability was found by 0sec using automated source analysis and verified against HID input registration and probe unwind paths. The CVE record and NVD entry provide details on the vulnerability.

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.