CVE-2026-98502 Linux CVE debrief

Who should care

Linux kernel developers and maintainers, as well as users of Linux-based systems that utilize the HID: alps module, should be aware of this vulnerability and take necessary actions to prevent memory leaks on device removal. This includes verifying device removal procedures and monitoring system logs for potential issues related to HID: alps module. The vulnerability has a medium defensive priority and requires attention from affected parties to ensure the

Why it matters

A vulnerability in the Linux kernel's HID: alps module can lead to memory leaks on device removal, requiring verification of device removal procedures and monitoring of system logs.

• Memory leaks can occur on device removal, potentially leading to system instability.
• Verification of device removal procedures is necessary to prevent memory leaks.
• Monitoring system logs is recommended to detect potential issues related to HID: alps module.

Technical summary

The Linux kernel's HID: alps module has a vulnerability that allows for memory leaks when removing devices. The alps_input_configured function allocates a second input device, but the alps_driver struct lacks a .remove handler, preventing the device from being properly unregistered. This issue can lead to memory leaks on device removal, potentially leading to system instability. The vulnerability affects Linux kernel developers and maintainers, as well as users of Linux-based systems that utilize the HID: alps module.

Defensive priority

Medium

Recommended defensive actions

• Review and apply the Linux kernel patch to add a .remove handler for the alps_driver struct.
• Verify device removal procedures to prevent memory leaks.
• Monitor system logs for potential issues related to HID: alps module.
• 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 NVD entry provide information on the vulnerability, but details on exploitation and impact are limited. The Linux kernel patch notes and Git commit history provide additional context.

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.