Buffer Overflow Vulnerability in Linux Kernel - Package: linux
Summary
DEBIAN-CVE-2024-39291: In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix buffer size in gfx_v9_4_3_init_ cp_compute_microcode() and rlc_microcode() The function gfx_v9_4_3_init_microcode in gfx_v9_4_3.c was ge... 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 applications. It is widely used across various platforms, including servers, desktops, and embedded systems. The vulnerability in question arises from a buffer size issue in the AMD GPU driver, specifically in the gfx_v9_4_3.c file, which can lead to potential truncation and buffer overflow.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the AMD GPU driver where the function gfx_v9_4_3_init_microcode generates a warning due to potential truncation of output when using the snprintf function. The buffer 'ucode_prefix' was too small to accommodate the maximum possible length of the string being written, which could lead to buffer overflow. The string being written can exceed the buffer size, causing potential security risks.
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, there are no specific workarounds mentioned for this vulnerability. It is recommended to apply the patch as soon as it is available.
Conclusion
The identified vulnerability in the Linux kernel's AMD GPU driver poses a significant risk due to potential buffer overflow. 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
The vulnerability is a buffer overflow issue in the AMD GPU driver of the Linux kernel, which can lead to potential security risks.
You can use the Vulert platform to check if your application is affected by this vulnerability. Simply upload your manifest file like package-lock.json to monitor and alert for open-source vulnerabilities.
Failure to fix this vulnerability may expose your system to security risks, including potential crashes or exploitation by malicious actors.
Yes, the vulnerability affects the Linux kernel versions prior to 6.9.7-1 in Debian 13 and 14.
More information can be found in the official Debian CVE database or by visiting the Vulert website for real-time monitoring of open-source vulnerabilities.
References
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