Memory Leak Vulnerability in Linux Kernel: Debian Packages Affected
Summary
DEBIAN-CVE-2024-50231: In the Linux kernel, the following vulnerability has been resolved: iio: gts-helper: Fix memory leaks in iio_gts_build_avail_scale_table() modprobe iio-test-gts and rmmod it, then the following memory leak occurs: unrefe... Affects linux versions < 6.11.7-1. Fixed in 6.11.7-1. How to fix ↓
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Background
The Linux kernel is the core component of the Debian operating system, responsible for managing hardware and system resources. It provides essential services for all other parts of the operating system. The kernel is highly modular, allowing for various drivers and subsystems to be loaded and unloaded dynamically. This flexibility, while beneficial, can also introduce vulnerabilities, such as memory leaks, which can lead to resource exhaustion and system instability.
Vulnerability Detail
In the Linux kernel, a memory leak vulnerability has been identified in the iio: gts-helper module. This issue arises when the modprobe command is used to load the iio-test-gts module and subsequently unload it with rmmod. The vulnerability leads to unreferenced memory objects not being freed, resulting in memory leaks. Specifically, multiple instances of memory leaks occur due to the failure to release allocated memory during the execution of certain test functions. This can lead to increased memory consumption and potential system crashes if left unaddressed.
How To Fix
Minimum fixed version
6.11.7-1
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 are provided for this vulnerability. Users are advised to apply the patch as soon as it becomes available to mitigate the risk of memory leaks.
Conclusion
The memory leak vulnerability in the Linux kernel poses a significant risk to Debian users. It is crucial to update to the patched version to mitigate potential impacts. Users are encouraged to utilize tools like Vulert to monitor their systems for vulnerabilities and ensure they are protected against such issues.
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FAQ
A memory leak occurs when a program allocates memory but fails to release it after use, leading to increased memory consumption and potential system instability.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. By uploading your manifest file, such as package-lock.json, you can check for vulnerabilities without needing to install any software.
If exploited, this memory leak can lead to resource exhaustion, causing the system to slow down or crash, especially under heavy load.
Yes, the vulnerability affects Debian versions 13 and 14, specifically in the Linux kernel package.
It is recommended to regularly check for updates and apply them promptly to ensure your system remains secure against known vulnerabilities.
References
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