Array Index Out-of-Bounds Vulnerability in Linux Kernel - CVE-2023-53340
Summary
CVE-2023-53340: In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Collect command failures data only for known commands DEVX can issue a general command, which is not used by mlx5 driver. Affects linux versions < 6.1.37-1. Fixed in 6.1.37-1. How to fix ↓
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Background
The Linux kernel is the core component of many operating systems, responsible for managing hardware and system resources. It provides essential services for all other parts of the operating system. The kernel is modular, allowing for the addition of drivers and other components to enhance functionality. This vulnerability affects the mlx5 driver, which is used for managing network devices, particularly those from Mellanox Technologies. The issue arises when the driver attempts to handle command failures for unknown commands, leading to potential instability.
Vulnerability Detail
CVE-2023-53340 is a vulnerability in the Linux kernel's mlx5 driver, where the driver attempts to collect failure data for commands that it does not recognize. This can lead to an array-index-out-of-bounds error, which may cause system crashes or unpredictable behavior. The root of the problem lies in the lack of validation for command types before attempting to access data structures that are not allocated for unknown commands. This oversight can be exploited, potentially leading to denial of service or other security issues.
How To Fix
Minimum fixed version
6.1.37-1
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 provided for this vulnerability. It is recommended to apply the patch as soon as it is available.
Conclusion
CVE-2023-53340 represents a significant vulnerability in the Linux kernel's mlx5 driver, which can lead to serious system issues if not addressed. Users are strongly encouraged to update their systems to the patched versions to ensure continued stability and security.
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FAQ
CVE-2023-53340 is a vulnerability in the Linux kernel's mlx5 driver that can lead to an array-index-out-of-bounds error.
Exploitation of this vulnerability may lead to system crashes or unpredictable behavior, potentially compromising system stability.
Debian 12, 13, and 14 are affected by this vulnerability, specifically in the Linux package.
You can check if your application is affected by using the Vulert playground at Vulert Scanner, which allows you to monitor for vulnerabilities without requiring installation.
While there are no specific workarounds, it is crucial to plan for an update as soon as possible to mitigate the risk associated with this vulnerability.
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