CVE-2025-38253: HID: wacom: fix crash in wacom_aes_battery_handler()

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-07-09 · updated 2026-10-15

Description

In the Linux kernel, the following vulnerability has been resolved: HID: wacom: fix crash in wacom_aes_battery_handler() Commit fd2a9b29dc9c ("HID: wacom: Remove AES power_supply after extended inactivity") introduced wacom_aes_battery_handler() which is scheduled as a delayed work (aes_battery_work). In wacom_remove(), aes_battery_work is not canceled. Consequently, if the device is removed while aes_battery_work is still pending, then hard crashes or "Oops: general protection fault..." are experienced when wacom_aes_battery_handler() is finally called. E.g., this happens with built-in USB devices after resume from hibernate when aes_battery_work was still pending at the time of hibernation. So, take care to cancel aes_battery_work in wacom_remove().

Affected products

Linux kernel: from 6.8 before 6.12.36; from 6.13 before 6.15.5; 6.16-rc1, 6.16-rc2, 6.16-rc3 — fixed in 6.12.36, 6.15.5

How to fix

Upgrade to a fixed version: Linux kernel 6.12.36, 6.15.5. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2025-38253 or the next vulnerability affects your stack