Critical NULL Pointer Dereference Vulnerability in Linux Kernel Package
Summary
DEBIAN-CVE-2024-46793: In the Linux kernel, the following vulnerability has been resolved: ASoC: Intel: Boards: Fix NULL pointer deref in BYT/CHT boards harder Since commit 13f58267cda3 ("ASoC: soc.h: don't create dummy Component via COMP_DUMM... Affects linux versions < 6.10.11-1. Fixed in 6.10.11-1. 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 in various devices, from servers to embedded systems. This vulnerability affects the ASoC (ALSA System on Chip) subsystem, specifically in Intel's BYT/CHT boards, where a NULL pointer dereference can lead to system crashes.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified that allows for a NULL pointer dereference in the ASoC subsystem for Intel BYT/CHT boards. This issue arises from a change made in commit 13f58267cda3, which resulted in dummy codecs being declared as zero-sized arrays. Consequently, dereferencing these arrays can lead to out-of-bounds access, causing crashes when the code attempts to access the 'name' member of a NULL pointer. This vulnerability can lead to system instability and potential data loss.
How To Fix
Minimum fixed version
6.10.11-1
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
As a temporary workaround, users can avoid using the affected ASoC components until the package is updated. However, this is not a permanent solution and updating the package is strongly recommended.
Conclusion
The identified NULL pointer dereference vulnerability in the Linux kernel poses significant risks to system stability and security. Users are encouraged to update their packages to the latest patched version to mitigate these risks effectively.
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FAQ
A NULL pointer dereference occurs when a program attempts to access memory at a location that is NULL, leading to crashes or undefined behavior.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected by this vulnerability.
Exploiting this vulnerability can lead to system crashes, instability, and potential data loss, affecting the overall performance of the system.
While the risk of exploitation depends on the specific use case and environment, it is advisable to apply the patch as soon as possible to mitigate any potential threats.
It is recommended to regularly check for updates and apply them promptly to ensure that your system is protected against known vulnerabilities.
References
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