CVE-2026-98671 Linux CVE debrief

Who should care

Linux kernel developers and maintainers, as well as users of Linux-based systems that utilize the iio: adc: sun4i-gpadc-iio driver, should assess their exposure and apply the provided patches to mitigate potential risks. This includes reviewing and applying the provided kernel patches, ensuring that the Linux kernel is updated with the latest security patches, and monitoring system logs for potential exploitation attempts.

Why it matters

The vulnerability in the Linux kernel's iio: adc: sun4i-gpadc-iio driver can lead to resource leaks and system instability if not properly addressed. Linux kernel developers and users should assess their exposure and apply the provided patches to mitigate potential risks.

• Verify and apply kernel patches to prevent resource leaks
• Monitor system logs for potential exploitation attempts
• Ensure Linux kernel is updated with latest security patches

Technical summary

The vulnerability occurs in the iio: adc: sun4i-gpadc-iio driver of the Linux kernel. When devm_thermal_of_zone_register() fails, the probe returns without properly cleaning up resources, including unregistering the IIO map array and disabling runtime PM. This can lead to resource leaks and potential system instability. The issue can be addressed by jumping to err_map to release resources. Linux kernel developers and users should assess their exposure and apply the provided patches to mitigate potential risks. The vulnerability can be mitigated by reviewing and applying the provided kernel patches, ensuring that the Linux kernel is updated with the latest security patches, and monitoring system logs for

Defensive priority

Low

Recommended defensive actions

• Review and apply the provided kernel patches to address the vulnerability
• Ensure that the Linux kernel is updated with the latest security patches
• Monitor system logs for potential exploitation attempts
• Verify 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 details on the vulnerability. However, additional information from other sources is limited. The vulnerability occurs in the iio: adc: sun4i-gpadc-iio driver of the Linux kernel. When devm_thermal_of_zone_register() fails, the probe returns without properly cleaning up resources, including unregistering the IIO map array and disabling runtime PM. This can lead to resource leaks and potential system instability. Linux kernel developers and maintainers, as well as users of Linux-based systems that

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.