Race Condition Vulnerability in nfsd Package
Summary
GSD-2021-1002512: nfsd: Fix nsfd startup race (again). Affects Kernel versions >= 7c7cb07d4affcf41749234fe9dc4d90cd3959e32, < c520943a00ad5015704969ad3304c956bcd49d25. No fix is published. How to fix ↓
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Background
The nfsd package is a component of the Linux Kernel that provides support for the Network File System (NFS) protocol. NFS allows remote file systems to be mounted and accessed over a network. The nfsd daemon is responsible for handling NFS requests and managing file operations. It is a critical component for systems that rely on NFS for file sharing and remote access.
Vulnerability Detail
The race condition vulnerability in the nfsd package allows for a startup race condition during the initialization of the nfsd daemon. This vulnerability was introduced in version v5.10.20 of the Linux Kernel and was fixed in version v5.10.85. The vulnerability could potentially be exploited by an attacker to disrupt the proper initialization of the nfsd daemon, leading to denial of service or other security issues. The exact impact and attack plausibility have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been provided for this vulnerability.
Conclusion
The race condition vulnerability in the nfsd package can be mitigated by updating the Linux Kernel to version v5.10.85 or later. It is important to promptly apply the necessary updates to ensure the security and stability of systems relying on NFS functionality. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The nfsd package is a component of the Linux Kernel that provides support for the Network File System (NFS) protocol. It allows remote file systems to be mounted and accessed over a network.
A race condition vulnerability occurs when the behavior of a program or system depends on the relative timing of events, and an attacker can manipulate this timing to cause unexpected or malicious outcomes.
The impact of this vulnerability could include denial of service or other security issues, depending on the specific exploitation scenario. However, the exact impact and attack plausibility have not been proven yet.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.10.85 or later. This update includes the necessary fix to address the race condition during the startup of the nfsd daemon.
No specific workaround has been provided for this vulnerability.
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