Critical Vulnerability in Linux Package: Null Dereference on System Suspend
Summary
DEBIAN-CVE-2024-41037: In the Linux kernel, the following vulnerability has been resolved: ASoC: SOF: Intel: hda: fix null deref on system suspend entry When system enters suspend with an active stream, SOF core calls hw_params_upon_resume(). Affects linux versions < 6.9.10-1. Fixed in 6.9.10-1. How to fix ↓
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Background
The Linux kernel is a core component of the operating system, responsible for managing hardware resources and providing essential services to applications. It supports a wide range of functionalities, including process management, memory management, and device control. The kernel is crucial for system stability and performance. This specific vulnerability affects the Linux kernel versions in Debian 13 and 14, potentially compromising system reliability during suspend operations.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified related to the ASoC (ALSA System on Chip) subsystem, specifically affecting Intel platforms using HDA (High Definition Audio) DMA for link management. When the system enters suspend mode with an active audio stream, a sequence of function calls leads to a null dereference due to improper handling of the audio stream's substream pointer. This can result in system crashes or unexpected behavior, particularly during audio playback or recording operations.
How To Fix
Minimum fixed version
6.9.10-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade linuxTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
Currently, there are no specific workarounds mentioned for this vulnerability. Users are advised to apply the patch as soon as it is available to mitigate the risk.
Conclusion
The identified vulnerability in the Linux kernel poses a significant risk during system suspend operations on Intel platforms. Users are strongly encouraged to update their systems to the patched version 6.9.10-1 to ensure continued stability and security. Monitoring tools like Vulert can assist in identifying vulnerabilities in real-time.
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FAQ
The vulnerability is a null dereference issue that occurs when the system enters suspend mode with an active audio stream, potentially leading to system crashes.
The affected versions are those prior to 6.9.10-1 in both Debian 13 and 14.
You can use tools like Vulert to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected without requiring any installation.
While there are no specific workarounds, it is recommended to minimize the use of audio functionalities during system suspend until the update can be applied.
Detailed information can be found in the Debian CVE database at https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2024-41037.json.
References
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