SB2025082867 - NULL pointer dereference in Linux kernel realtek rtw89 driver
Published: August 28, 2025
Security Bulletin ID
SB2025082867
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-2025-38646)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the rtw89_core_cancel_6ghz_probe_tx() function in drivers/net/wireless/realtek/rtw89/core.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/4b525630729082f026e7030eafccf89e3add7eae
- https://git.kernel.org/stable/c/77a7a48f87d673a68664bebf044214821decbfda
- https://git.kernel.org/stable/c/7e04f01bb94fe61c73cc59f0495c3b6c16a83231
- https://git.kernel.org/stable/c/892b29eab44b1803d2cad8e50f1bc2144ef478cb
- https://git.kernel.org/stable/c/f3527ac15a00916e68ecb495b74dbe6a6c62a06f