Out of Bounds Access Vulnerability in Linux Kernel - CVE-2023-52766
Summary
CVE-2023-52766: In the Linux kernel, the following vulnerability has been resolved: i3c: mipi-i3c-hci: Fix out of bounds access in hci_dma_irq_handler Do not loop over ring headers in hci_dma_irq_handler() that are not allocated and ena... 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 the core component of many operating systems, responsible for managing hardware and system resources. It provides essential services for all other parts of the system, including process management, memory management, and device control. The kernel is modular, allowing for various functionalities to be added or removed as needed. This specific vulnerability affects the MIPI I3C Host Controller Interface (HCI), which is responsible for managing communication between the processor and I3C devices.
Vulnerability Detail
CVE-2023-52766 is a vulnerability found in the Linux kernel's MIPI I3C HCI implementation. The issue arises from improper handling of ring headers in the hci_dma_irq_handler function. When the function loops over ring headers that are not allocated or enabled, it can lead to out-of-bounds access, potentially causing system instability or crashes. This vulnerability is particularly critical as it can be exploited to read or write memory locations that should not be accessible, leading to unauthorized access or corruption of data.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
Currently, there are no specific workarounds provided for this vulnerability. The best course of action is to apply the necessary updates as soon as they are available.
Conclusion
CVE-2023-52766 is a significant vulnerability in the Linux kernel that can lead to serious security issues if not addressed. Users are strongly advised to update their systems to the latest kernel versions to protect against potential exploits. Utilizing tools like Vulert can help in monitoring and managing vulnerabilities effectively.
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FAQ
CVE-2023-52766 is a vulnerability in the Linux kernel that allows for out-of-bounds access in the MIPI I3C HCI implementation, potentially leading to system instability.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. By using the Vulert playground, you can check if your application is affected without any signup.
The risks include unauthorized access to memory, potential data corruption, and system crashes, which could compromise system integrity and security.
The vulnerability affects various versions of the Linux kernel across Debian 11, 12, and 13, with specific fixed versions provided for each.
While there are no specific workarounds, the best practice is to apply the kernel updates as soon as they are available to mitigate the risk.
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