CVE-2026-64366
kernel: HID: wacom: fix slab-out-of-bounds write in wacom_wac_queue_insert
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · July 25, 2026
Updated · October 29, 2026
Description
A flaw was found in the Linux kernel's Wacom Human Interface Device (HID) driver. This vulnerability occurs in the wacom_wac_queue_insert function when handling incoming reports. Improper management of the kernel's internal buffer (kfifo) can lead to a slab-out-of-bounds write, allowing an attacker to corrupt memory. This memory corruption could potentially result in a denial of service or, in some cases, arbitrary code execution.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-787 · Out-of-bounds Write