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CVE-2026-68087
HID: wacom: use GFP_ATOMIC in wacom_wac_queue_flush()
Overview
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.

Details
INFO

Published Date :

Aug. 10, 2026, 12:17 p.m.

Last Modified :

Aug. 10, 2026, 12:17 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Impact
Affected Products

The following products are affected by CVE-2026-68087 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

No affected product recoded yet

: Total Affected Vendor : 0 | Products : 0
Solution
Update the Linux kernel to resolve a memory allocation issue in the Wacom driver.
  • Update the Linux kernel to the patched version.
  • Verify the Wacom driver uses GFP_ATOMIC.
  • Ensure allocation failure handling is present.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-68087.

URL Resource
https://git.kernel.org/stable/c/27c4dad1b7917b747bf080792a527997e3147c69
https://git.kernel.org/stable/c/55f1ad573e34abf9a0443c34bc5a63d74edba7d7
https://git.kernel.org/stable/c/bbe1e55629bfaabd4b2e8125b48dd3503d74ac8b
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-68087 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-68087 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-68087 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-68087 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 10, 2026

    Action Type Old Value New Value
    Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5e013ad206895e72d7da41bc1ae89d8cb499c3aa', 'lessThan': 'bbe1e55629bfaabd4b2e8125b48dd3503d74ac8b', 'versionType': 'git'}, {'status': 'affected', 'version': '5e013ad206895e72d7da41bc1ae89d8cb499c3aa', 'lessThan': '27c4dad1b7917b747bf080792a527997e3147c69', 'versionType': 'git'}, {'status': 'affected', 'version': '5e013ad206895e72d7da41bc1ae89d8cb499c3aa', 'lessThan': '55f1ad573e34abf9a0443c34bc5a63d74edba7d7', 'versionType': 'git'}], 'programFiles': ['drivers/hid/wacom_sys.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.15'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.15', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.39', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.4', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/hid/wacom_sys.c'], 'defaultStatus': 'affected'}]
    Added 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.
    Added Reference https://git.kernel.org/stable/c/27c4dad1b7917b747bf080792a527997e3147c69
    Added Reference https://git.kernel.org/stable/c/55f1ad573e34abf9a0443c34bc5a63d74edba7d7
    Added Reference https://git.kernel.org/stable/c/bbe1e55629bfaabd4b2e8125b48dd3503d74ac8b
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
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