SB20260918365 - Incomplete cleanup in Linux kernel thermal driver
Published: September 18, 2026
Security Bulletin ID
SB20260918365
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Incomplete cleanup (CVE-ID: CVE-2026-90311)
CWE-ID: CWE-459 - Incomplete cleanup
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource cleanup in thermal_remove_hwmon_sysfs when removing a thermal zone that hosts a shared hwmon class device. A local user can trigger removal of the thermal zone to cause a denial of service.
The shared hwmon interface can contain sysfs attributes associated with other thermal zones of the same type.
Remediation
Install update from vendor's website.