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Vulnerability DatabaseCVE-2025-40162
CVE-2025-40162:
Linux Kernel vulnerability analysis and mitigation
Overview
A vulnerability (CVE-2025-40162) was discovered in the Linux kernel's ASoC AMD SoundWire utilities component. The issue was disclosed on November 12, 2025, affecting the Linux kernel's audio subsystem. The vulnerability stems from a potential NULL pointer dereference in the debug message handling when devm_kasprintf() fails (NVD).
Technical details
The vulnerability occurs in the AMD SoundWire utilities where devmkasprintf() may return NULL on memory allocation failure. The debug message attempts to print cpus->dainame before checking if the pointer is NULL, which could lead to a NULL pointer dereference. The fix involves moving the dev_dbg() call after the NULL check to prevent the potential dereference (Debian Tracker).
Impact
The vulnerability could potentially cause a system crash due to NULL pointer dereference in the Linux kernel's audio subsystem, specifically affecting the AMD SoundWire functionality (NVD).
Mitigation and workarounds
The issue has been fixed in various Linux distributions including Debian Bookworm (6.1.158-1), Trixie (6.12.57-1), and Forky (6.17.8-1). Users are advised to update their systems to the patched versions (Debian Tracker).
Additional resources
Source: This report was generated using AI
Related Linux Kernel vulnerabilities:
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