Critical Race Condition in ksmbd - Linux Package Vulnerability
Summary
CVE-2024-58087: In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix racy issue from session lookup and expire Increment the session reference count within the lock for lookup to avoid racy issue with session e... Affects linux versions < 6.1.123-1. Fixed in 6.1.123-1. How to fix ↓
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Background
The Linux kernel is a core component of the Linux operating system, responsible for managing hardware resources and providing essential services to applications. It supports a wide range of functionalities, including process management, memory management, and file systems. The ksmbd module allows for SMB (Server Message Block) protocol support, enabling file sharing and network communication between Linux and Windows systems. This vulnerability affects the session management within ksmbd, potentially leading to security issues.
Vulnerability Detail
The vulnerability identified as CVE-2024-58087 arises from a race condition in the ksmbd module of the Linux kernel. Specifically, it involves a flaw in the session lookup and expiration process, where the session reference count is not incremented within a lock. This oversight can lead to a situation where sessions may expire prematurely or be accessed concurrently, resulting in undefined behavior and potential security breaches. Attackers could exploit this vulnerability to disrupt service or gain unauthorized access to resources.
How To Fix
Minimum fixed version
6.1.123-1
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. The best course of action is to apply the available patches as soon as possible.
Conclusion
CVE-2024-58087 is a critical vulnerability in the ksmbd module of the Linux kernel that can lead to serious security issues due to a race condition in session management. Users are strongly advised to update their systems to the latest patched versions to ensure protection against potential exploits.
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FAQ
CVE-2024-58087 is a vulnerability in the ksmbd module of the Linux kernel that involves a race condition in session management.
This vulnerability can lead to premature session expiration and potential unauthorized access, impacting the security and stability of your system.
You should update your Linux package to the patched version as soon as possible to mitigate the risk associated with this vulnerability.
Currently, there are no specific workarounds available. The recommended action is to apply the patches.
You can use Vulert, which monitors and alerts in real-time for open-source vulnerabilities by analyzing your manifest file. Visit https://vulert.com for more information.
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