Memory Corruption Vulnerability in Linux Kernel: DEBIAN-CVE-2024-51729
Summary
DEBIAN-CVE-2024-51729: In the Linux kernel, the following vulnerability has been resolved: mm: use aligned address in copy_user_gigantic_page() In current kernel, hugetlb_wp() calls copy_user_large_folio() with the fault address. Affects linux versions < 6.12.8-1. Fixed in 6.12.8-1. 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 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, which could lead to severe consequences if exploited.
Vulnerability Detail
In the Linux kernel, a vulnerability was identified in the handling of memory addresses during the copy_user_gigantic_page() function. The issue arises when hugetlb_wp() calls copy_user_large_folio() with a fault address that may not align with the huge page size. Consequently, this misalignment can lead to memory corruption or information leaks. The vulnerability highlights the importance of ensuring that addresses passed to copy_user_gigantic_page() are properly aligned to avoid such critical issues.
How To Fix
Minimum fixed version
6.12.8-1
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. It is recommended to apply the patch as soon as it is available to mitigate any risks associated with this issue.
Conclusion
The DEBIAN-CVE-2024-51729 vulnerability in the Linux kernel poses significant risks, including memory corruption and information leaks. It is crucial for users to update their systems to the patched version to mitigate these risks. Utilizing tools like Vulert can help in monitoring and managing vulnerabilities effectively.
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FAQ
DEBIAN-CVE-2024-51729 is a vulnerability in the Linux kernel that can lead to memory corruption or information leaks due to misaligned addresses during memory operations.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. By simply using a manifest file like package-lock.json, you can check for vulnerabilities without requiring installation.
The vulnerability can lead to memory corruption, which may result in system instability, crashes, or unauthorized access to sensitive information.
Yes, a patch is available in the form of the Linux kernel version 6.12.8-1 for both Debian 13 and 14.
You can use Vulert's playground to monitor your applications for vulnerabilities in real-time without any signup. Visit Vulert Scanner to check your application.
References
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