SB20260912322 - Use-after-free in Linux kernel power supply driver
Published: September 12, 2026
Security Bulletin ID
SB20260912322
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) Use-after-free (CVE-ID: CVE-2026-89463)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 5.6 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local privileged user to cause a denial of service.
The vulnerability exists due to use-after-free in the ucs1002 health_poll delayed work when unbinding the ucs1002 driver while health polling work is queued. A local privileged user can cause the driver to be unbound while health polling work is queued to cause a denial of service.
The delayed work can reschedule itself while the chip reports a bad-health condition.
Remediation
Install update from vendor's website.