CVE-2026-68087

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.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/27c4dad1b7917b747bf080792a527997e3147c69
https://git.kernel.org/stable/c/55f1ad573e34abf9a0443c34bc5a63d74edba7d7
https://git.kernel.org/stable/c/bbe1e55629bfaabd4b2e8125b48dd3503d74ac8b

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-10 12:17

Updated : 2026-08-17 05:18

NVD link : CVE-2026-68087

Mitre link : CVE-2026-68087

CVE.ORG link : CVE-2026-68087

JSON object : View

Products Affected

No product.

CWE

No CWE.

{"id": "CVE-2026-68087", "cveTags": [], "metrics": {}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"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", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/hid/wacom_sys.c"], "defaultStatus": "affected"}]}], "published": "2026-08-10T12:17:21.340", "references": [{"url": "https://git.kernel.org/stable/c/27c4dad1b7917b747bf080792a527997e3147c69", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/55f1ad573e34abf9a0443c34bc5a63d74edba7d7", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/bbe1e55629bfaabd4b2e8125b48dd3503d74ac8b", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Received", "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: wacom: use GFP_ATOMIC in wacom_wac_queue_flush()\n\nwacom_wac_queue_flush() is called via the .raw_event callback\n(wacom_raw_event \u2192 wacom_wac_pen_serial_enforce \u2192 wacom_wac_queue_flush).\nFor USB HID devices, this callback is invoked from hid_irq_in(), which\nis a URB completion handler running in atomic context. Using GFP_KERNEL\nin this path can sleep, leading to a \"scheduling while atomic\" bug.\n\nUse GFP_ATOMIC instead. The existing code already handles allocation\nfailure by skipping the fifo entry and continuing."}], "lastModified": "2026-08-17T05:18:07.870", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}