Critical Overflow Vulnerability in Linux Kernel's io_uring Package
Summary
CVE-2024-53187: In the Linux kernel, the following vulnerability has been resolved: io_uring: check for overflows in io_pin_pages WARNING: CPU: 0 PID: 5834 at io_uring/memmap.c:144 io_pin_pages+0x149/0x180 io_uring/memmap.c:144 CPU: 0 U... Affects linux versions 5.10.103-1 – 6.9.9-1. No fix is published. How to fix ↓
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Background
The Linux kernel is a core component of many operating systems, providing essential services for hardware and software interaction. The io_uring package is a modern interface for asynchronous I/O operations, designed to improve performance and efficiency. However, it has been found to be vulnerable to an overflow issue that can lead to potential security risks.
Vulnerability Detail
The vulnerability, identified as CVE-2024-53187, arises from the io_pin_pages function within the io_uring subsystem. The uaddr parameter, which is supplied directly by the user, may contain garbage data. If the size is added to this parameter without proper validation, it can lead to an overflow, potentially allowing an attacker to manipulate memory and execute arbitrary code. This vulnerability poses significant risks, especially in environments where the kernel is exposed to untrusted inputs.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
Currently, there are no specific workarounds mentioned for this vulnerability. It is recommended to apply the patch as soon as it becomes available for your distribution.
Conclusion
The CVE-2024-53187 vulnerability in the Linux kernel's io_uring package poses a significant security risk due to potential memory overflow issues. It is essential for users to update their systems to the patched version to safeguard against potential exploits. Regular monitoring and prompt updates are key to maintaining system security.
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FAQ
CVE-2024-53187 is a critical overflow vulnerability found in the io_uring subsystem of the Linux kernel, which can lead to memory manipulation and potential code execution.
If exploited, this vulnerability can allow an attacker to execute arbitrary code, potentially compromising the entire system.
The vulnerability affects multiple versions of the Linux kernel, specifically those prior to the patched version 6.12.3-1 for Debian 13.
You can use Vulert, a tool that monitors open-source vulnerabilities in your software. By uploading your manifest file like package-lock.json, you can check for vulnerabilities without needing to install any software.
While there are no specific workarounds, it is crucial to monitor for updates and apply them as soon as possible to mitigate the risk.
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