Vulnerability Description
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.
References
- https://git.kernel.org/stable/c/27c4dad1b7917b747bf080792a527997e3147c69
- https://git.kernel.org/stable/c/55f1ad573e34abf9a0443c34bc5a63d74edba7d7
- https://git.kernel.org/stable/c/bbe1e55629bfaabd4b2e8125b48dd3503d74ac8b
FAQ
What is CVE-2026-68087?
CVE-2026-68087 is a documented vulnerability. 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_eve...
How severe is CVE-2026-68087?
CVSS scoring is not yet available for CVE-2026-68087. Check NVD for updates.
Is there a patch for CVE-2026-68087?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.