SB20251112107 - NULL pointer dereference in Linux kernel devfreq driver
Published: November 12, 2025
Security Bulletin ID
SB20251112107
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 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2025-40156)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the mtk_ccifreq_probe() function in drivers/devfreq/mtk-cci-devfreq.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/24d61b6e23d2c7291c528dd43a0bf76b5c05c8f0
- https://git.kernel.org/stable/c/44e32104cf7e670e3d683c97b52350d8fac23322
- https://git.kernel.org/stable/c/80eab6a9df7e1107dc334434dbacd05297703377
- https://git.kernel.org/stable/c/9cc23e221f392304b7b8aad213812564ddf6517e
- https://git.kernel.org/stable/c/fc33bf0e097c6834646b98a7b3da0ae5b617f0f9