NFSv4: Don't hold the layoutget locks across multiple RPC calls in Kernel
Summary
GSD-2022-1002912: NFSv4: Don't hold the layoutget locks across multiple RPC calls. Affects Kernel versions < 08d7a26d115cc7892668baa9750f64bd8baca29b. No fix is published. 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 Kernel is a critical component of the Linux operating system that provides core functionalities and acts as an interface between hardware and software. It manages system resources, facilitates communication between processes, and ensures security and stability. The NFSv4 protocol is used for network file sharing, allowing remote clients to access files on a server. However, a vulnerability has been discovered in the Kernel's implementation of NFSv4, specifically related to holding the layoutget locks across multiple RPC calls.
Vulnerability Detail
The vulnerability in NFSv4 arises from the improper handling of layoutget locks across multiple RPC calls. By exploiting this flaw, an attacker could potentially gain unauthorized access to sensitive data or disrupt the normal functioning of the system. The vulnerability has not yet been proven to have a specific impact or attack vector, but it is considered a potential security risk.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
In conclusion, the NFSv4 vulnerability in the Kernel's handling of layoutget locks across multiple RPC calls poses a potential security risk. It is crucial to update the Linux Kernel to version v5.17.15 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The impact of this vulnerability is not yet proven, but it could potentially lead to unauthorized access to sensitive data or disruption of system functionality.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your manifest file (e.g., package-lock.json) and the Vulert Playground will analyze it in real-time.
There is no known exploit for this vulnerability at the moment. However, it is important to apply the recommended fix to ensure the system is protected.
The specific prerequisites for exploiting this vulnerability have not been identified. However, it is always recommended to keep systems up to date with the latest security patches and updates.
The vulnerability was discovered by an automated ID intended to aid in the discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
