SB20260912164 - Use-after-free in Linux kernel hid driver
Published: September 12, 2026
Security Bulletin ID
SB20260912164
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-89624)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to write to freed memory.
The vulnerability exists due to improper resource shutdown in universal_pidff_probe() when opening a surviving /dev/hidrawX device after force-feedback initialization fails. A local user can open the surviving device to write to freed memory.
A descriptor with a PID usage page and no input reports can cause force-feedback initialization to fail after the device starts.
Remediation
Install update from vendor's website.