CVE-2024-36922: linux-libc-dev - kernel: wifi: iwlwifi: read txq->read_ptr under lock
Summary
CVE-2024-36922: In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: read txq->read_ptr under lock If we read txq->read_ptr without lock, we can read the same value twice, then obtain the lock, and reclaim... Affects linux versions 5.10.103-1 – 6.9.9-1. No fix is published. How to fix ↓
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Background
linux-libc-dev is a package that provides the Linux kernel headers for development. It includes the necessary files and definitions for building kernel modules and user-space programs that interact with the kernel. This package is widely used in Linux-based systems. However, a vulnerability has been discovered in the wifi component of the iwlwifi driver, which is part of the Linux kernel. This vulnerability allows an attacker to read the same value twice, leading to potential issues when reclaiming entries. The vulnerability has been assigned the CVE identifier CVE-2024-36922 and has a CVSS score of 5.5.
Vulnerability Detail
The vulnerability in the iwlwifi driver arises from reading the txq->read_ptr without proper locking. This can result in reading the same value twice and subsequently reclaiming the same entry twice, leading to unexpected behavior. An attacker could potentially exploit this vulnerability to cause a denial-of-service condition or other security issues. The Linux kernel has been updated to address this vulnerability by ensuring that txq->read_ptr is read under lock.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is essential to apply the provided fix by updating the linux-libc-dev package.
Conclusion
The linux-libc-dev package is vulnerable to a medium severity vulnerability in the iwlwifi driver. To mitigate this vulnerability, it is crucial to update the package to version 6.1.90-1 or later. No known workarounds are available. For further assistance or support in vulnerability remediation, please contact DevNack.com.
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FAQ
linux-libc-dev is a package that provides the Linux kernel headers for development. It includes the necessary files and definitions for building kernel modules and user-space programs that interact with the kernel.
This vulnerability can potentially be exploited by an attacker to cause a denial-of-service condition or other security issues.
The CVSS score of this vulnerability is 5.5, indicating a medium severity level.
No, there is no known workaround for this vulnerability. It is necessary to update the linux-libc-dev package to the fixed version.
To update the linux-libc-dev package, you can use the package manager's update command, such as 'apt-get update' followed by 'apt-get upgrade'. After the update, a system reboot is required.
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