SB2026081305 - Improper synchronization in Linux kernel hid driver
Published: August 13, 2026
Security Bulletin ID
SB2026081305
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper synchronization (CVE-ID: CVE-2026-68087)
CWE-ID: CWE-662 - Improper Synchronization
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local attacker to cause a denial of service.
The vulnerability exists due to improper resource access in wacom_wac_queue_flush() when processing raw HID events for USB HID devices. A local attacker can trigger the vulnerable allocation path to cause a denial of service.
The issue occurs because the code runs in atomic context, where sleeping allocations can trigger a "scheduling while atomic" bug.
Remediation
Install update from vendor's website.