CVE-2026-68087

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A scheduling while atomic bug exists in the Linux kernel. The function wacom wac queue flush() is called through the .raw event callback sequence (wacom raw event → wacom wac pen serial enforce → wacom wac queue flush()). For USB HID devices, this callback is triggered by hid irq in(), which operates as a URB completion handler in an atomic context. The use of GFP KERNEL in this execution path can cause the system to sleep, which is prohibited in atomic contexts.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.