CVE-2026-68087

Summary

In the Linux kernel, the following vulnerability has been resolved:

HID: wacom: use GFP_ATOMIC in wacom_wac_queue_flush()

wacom_wac_queue_flush() is called via the .raw_event callback (wacom_raw_event → wacom_wac_pen_serial_enforce → wacom_wac_queue_flush). For USB HID devices, this callback is invoked from hid_irq_in(), which is a URB completion handler running in atomic context. Using GFP_KERNEL in this path can sleep, leading to a "scheduling while atomic" bug.

Use GFP_ATOMIC instead. The existing code already handles allocation failure by skipping the fifo entry and continuing.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux5e013ad206895e72d7da41bc1ae89d8cb499c3aa < bbe1e55629bfaabd4b2e8125b48dd3503d74ac8baffected
LinuxLinux5e013ad206895e72d7da41bc1ae89d8cb499c3aa < 27c4dad1b7917b747bf080792a527997e3147c69affected
LinuxLinux5e013ad206895e72d7da41bc1ae89d8cb499c3aa < 55f1ad573e34abf9a0443c34bc5a63d74edba7d7affected
LinuxLinux6.15affected
LinuxLinux0 < 6.15unaffected
LinuxLinux6.18.39 <= 6.18.*unaffected
LinuxLinux7.1.4 <= 7.1.*unaffected
LinuxLinux7.2-rc1 <= *unaffected

Weaknesses

References