Null Pointer Dereference Vulnerability in Linux Kernel Package: linux
Summary
DEBIAN-CVE-2024-40964: In the Linux kernel, the following vulnerability has been resolved: ALSA: hda: cs35l41: Possible null pointer dereference in cs35l41_hda_unbind() The cs35l41_hda_unbind() function clears the hda_component entry matching... Affects linux versions < 6.9.7-1. Fixed in 6.9.7-1. How to fix ↓
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Background
The Linux kernel is the core component of the Linux operating system, responsible for managing hardware resources and providing essential services to software applications. It is widely used across various platforms, from servers to embedded systems. The kernel's stability and security are paramount, as vulnerabilities can lead to system crashes or unauthorized access.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the ALSA subsystem, specifically in the cs35l41_hda_unbind() function. This function is responsible for unbinding the audio codec from the hardware. The issue arises when the function attempts to dereference a codec pointer after clearing the corresponding hda_component entry, particularly when the device index is 0. This can lead to a null pointer dereference, potentially causing system instability or crashes. The vulnerability is tracked as DEBIAN-CVE-2024-40964.
How To Fix
Minimum fixed version
6.9.7-1
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, no specific workarounds have been provided for this vulnerability. It is recommended to apply the patch as soon as it is available to mitigate any potential risks.
Conclusion
The null pointer dereference vulnerability in the Linux kernel's ALSA subsystem poses significant risks to system stability. Users are urged to update their linux package to the patched version 6.9.7-1 to safeguard against potential exploitation. Regular monitoring and timely updates are crucial for maintaining system security.
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FAQ
The vulnerability is a null pointer dereference in the cs35l41_hda_unbind() function of the Linux kernel, which can lead to system instability.
You can use Vulert to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected.
The vulnerability affects the linux package in Debian 13 and 14, specifically versions prior to 6.9.7-1.
Yes, a patch is available in version 6.9.7-1 of the linux package. Users should update to this version to mitigate the vulnerability.
Exploiting this vulnerability could lead to system crashes or instability, affecting the overall performance and reliability of the system.
References
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