Memory Leak Vulnerability in Linux Kernel NFSv4 - CVE-2024-41076
Summary
CVE-2024-41076: In the Linux kernel, the following vulnerability has been resolved: NFSv4: Fix memory leak in nfs4_set_security_label We leak nfs_fattr and nfs4_label every time we set a security xattr. 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 Linux operating systems, managing hardware and system resources. It provides essential services for all other software running on the system. The kernel supports various file systems, including NFS (Network File System), which allows file sharing over a network. The vulnerability in question affects the NFSv4 implementation, specifically related to security attribute handling, leading to memory leaks that can degrade system performance.
Vulnerability Detail
CVE-2024-41076 is a memory leak vulnerability found in the NFSv4 subsystem of the Linux kernel. This issue arises when setting a security extended attribute (xattr), causing the system to leak memory associated with nfs_fattr and nfs4_label structures. The leak occurs every time a security xattr is set, potentially leading to increased memory consumption and system instability over time. If left unaddressed, this vulnerability could impact system performance and reliability, especially in environments with heavy NFS usage.
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 kernel update as soon as it becomes available.
Conclusion
CVE-2024-41076 is a significant memory leak vulnerability in the Linux kernel's NFSv4 subsystem that can lead to performance issues. Users are advised to update their systems promptly to mitigate the risks associated with this vulnerability. Regular monitoring using tools like Vulert can help maintain system security.
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FAQ
CVE-2024-41076 is a memory leak vulnerability in the NFSv4 implementation of the Linux kernel, which can lead to increased memory usage and potential system instability.
If exploited, this vulnerability can cause memory leaks that degrade system performance, especially in environments that rely heavily on NFS for file sharing.
You should update your Linux kernel to the latest version that includes the patch for CVE-2024-41076 to mitigate the risk.
Yes, you can use tools like Vulert to monitor and alert for open-source vulnerabilities in your software without needing to access the code directly.
The CVSS score for CVE-2024-41076 is 5.5, indicating a moderate level of severity.
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