Critical Vulnerability in Linux Kernel: NFS Client Tracking Initialization Issue
Summary
DEBIAN-CVE-2024-58092: In the Linux kernel, the following vulnerability has been resolved: nfsd: fix legacy client tracking initialization Get rid of the nfsd4_legacy_tracking_ops->init() call in check_for_legacy_methods(). Affects linux versions < 6.12.22-1. Fixed in 6.12.22-1. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The Linux kernel is the core component of many operating systems, responsible for managing hardware resources and providing essential services to software applications. It is known for its robustness and flexibility, supporting a wide range of hardware architectures and configurations. However, like any complex software, it is susceptible to vulnerabilities that can impact system security and stability. This specific vulnerability relates to the NFS (Network File System) server, which allows file sharing over a network. The issue arises from improper initialization of legacy client tracking, potentially leading to system instability.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the NFS server (nfsd) related to the initialization of legacy client tracking. The flaw occurs due to the redundant call to nfsd4_legacy_tracking_ops->init() within the check_for_legacy_methods() function. This redundancy can trigger a critical error (BUG_ON) in the nfsd4_init_recdir() function, leading to unexpected behavior and potential system crashes. The vulnerability affects both Debian 13 and 14 versions of the Linux package, with the introduction of the issue occurring from version 0 and being fixed in version 6.12.22-1.
How To Fix
Minimum fixed version
6.12.22-1
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 mentioned for this vulnerability. The best course of action is to apply the patch as soon as it is available.
Conclusion
The identified vulnerability in the Linux kernel's NFS server poses a significant risk due to improper client tracking initialization. It is crucial for users to update their systems to the patched version 6.12.22-1 to mitigate potential risks. Regular monitoring and prompt updates are essential for maintaining system security.
See every vulnerability recorded for linux →
FAQ
The vulnerability involves improper initialization of legacy client tracking in the NFS server, which can lead to system crashes.
The vulnerability affects Debian 13 and 14 versions of the Linux package, specifically versions prior to 6.12.22-1.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected.
While there are no specific workarounds, it is advisable to monitor your system for any unusual behavior and apply the patch as soon as possible.
Detailed information about this vulnerability can be found in the Debian CVE database at https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2024-58092.json.
References
Related vulnerabilities
Recent vulnerabilities recorded for linux.
