CVE-2026-98397 Linux CVE debrief

Who should care

Defenders responsible for Linux kernel security, specifically those managing platform/x86: x86-android-tablets modules, should assess exposure and prioritize patching. This includes Linux kernel security teams, vulnerability management teams, and operators managing Linux-based systems, especially those using platform/x86: x86-android-tablets modules.

Why it matters

A use-after-free vulnerability exists in the Linux kernel's platform/x86: x86-android-tablets module, requiring defenders to verify kernel versions and apply patches.

• Potential use-after-free during driver teardown
• Need to verify Linux kernel version and apply patches
• Possible device reference issues in platform/x86: x86-android-tablets module

Technical summary

The Linux kernel's platform/x86: x86-android-tablets module is vulnerable to a use-after-free issue. The gpio_secondary_fwnode_init() function returns a device reference, but the local dev variable is declared with __free(put_device), dropping the reference at the end of each iteration. Meanwhile, devm_add_action_or_reset() saves the dev pointer for gpio_secondary_unset() without incrementing its reference count.

Defensive priority

Defenders should prioritize verifying the Linux kernel version and applying patches to address this vulnerability. Specifically, Linux kernel versions 7.2 and later are affected, while versions 0 through 7.2.7 and 7.3-rc3 are not.

Recommended defensive actions

• Verify Linux kernel version and apply patches
• Review device reference handling in platform/x86: x86-android-tablets module
• Monitor for potential use-after-free issues during driver teardown
• 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
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE Program record and NVD vulnerability detail provide official information on this vulnerability. Supplemental sources include Linux kernel commit references. Affected Linux kernel versions require verification, and defenders should review device reference handling in platform/x86: x86-android-tablets module. The vulnerability's use-after-free issue during driver teardown necessitates patching and verification of kernel versions.

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.