SB20260824239 - Use-after-free in Linux kernel thermal driver
Published: August 24, 2026
Security Bulletin ID
SB20260824239
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-2026-74604)
CWE-ID: CWE-416 - Use After Free
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 user to cause a denial of service.
The vulnerability exists due to use-after-free in thermal_add_hwmon_sysfs() when handling the error path during hwmon sysfs device registration. A local user can trigger the vulnerable error-handling condition to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/2434f4765da8ccd7ef31be88b86f1bfa2e95be11
- https://git.kernel.org/stable/c/6a48ee9a5bda0f8ee501f9bef159fb9f39ff519a
- https://git.kernel.org/stable/c/6b446d335ba16e93a266dd77adf1ba51abc82df4
- https://git.kernel.org/stable/c/8d34019d1413629a434a7e8d9f91c76d256196a0
- https://git.kernel.org/stable/c/999e573212d5f1debf073c68be35e55bbfad12fc
- https://git.kernel.org/stable/c/b4c01ae6dd56d9dfd96bd1b29c28afa8fa06b366
- https://git.kernel.org/stable/c/ff8da20b6f47c48d46e47f93f7a59e2d56ee9107