Updates

Potential Deadlock Resolved in Linux Kernel: CVE-2024-49985

Copyright & Fact Checker 28 October 2024

2024-10-29

This vulnerability, recently identified as CVE-2024-49985, affects the Linux kernel and could lead to system deadlock under specific circumstances.

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The issue arises when a clock controller is attached to a specific I2C (Inter-Integrated Circuit) bus controller on a system running the Linux kernel. During runtime suspend and resume operations, a potential deadlock situation can occur due to conflicting attempts to access a lock (prepare_lock mutex) by both the clock controller and the I2C bus controller.

What Undercode Says:

This vulnerability highlights the importance of careful resource management within the Linux kernel. By relying on `clk_enable()` and `clk_disable()` for clock control during runtime suspend/resume, the developers have addressed the potential for deadlocks arising from the unnecessary use of `prepare/unprepare` functions. This approach ensures a smoother transition between these states without conflicting resource access.

Analysis:

While the National Vulnerability Database (NVD) currently classifies the severity of this vulnerability as pending analysis, it’s crucial to stay updated on potential issues within the Linux kernel. Deadlocks can lead to system freezes and crashes, impacting system stability and user experience.

The use of a Common Platform Enumeration (CPE) allows for easy identification of potentially affected systems. It’s recommended for users and system administrators to stay informed about updates and patches released by their Linux distribution providers to address this vulnerability.

By proactively applying these updates, users can mitigate the risk of encountering deadlocks related to CVE-2024-49985 and ensure the smooth operation of their systems.

References:

Initially Reported By: Nvd.nist.gov
https://www.techinnovatorsforum.com
Wikipedia: https://www.wikipedia.org
Undercode AI: https://ai.undercodetesting.com

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