NFS: Potential NULL Dereference in nfs_get_client() in Linux Kernel

Kernel Updated 02 Oct 2025

Summary

30/06/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1000864: NFS: Fix a potential NULL dereference in nfs_get_client(). Affects Kernel versions >= 31434f496abb9f3410b10f541462fe58613dd3ad, < 634f17ff1d59905eb3b4bbbc00805961d08beaee. No fix is published. How to fix ↓

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Background

The Linux Kernel is the core component of the Linux operating system. It provides essential functionality and services to enable the execution of user programs and manage system resources. NFS (Network File System) is a distributed file system protocol that allows remote file access over a network. The nfs_get_client() function is responsible for retrieving the NFS client data structure. However, a potential NULL dereference vulnerability exists in this function.

Vulnerability Detail

The vulnerability in nfs_get_client() can lead to a NULL pointer dereference. This occurs when the function attempts to access or manipulate data using a pointer that points to NULL. An attacker could exploit this vulnerability by sending a specially crafted request to a vulnerable system, potentially resulting in a denial of service (DoS) condition or arbitrary code execution. The impact and attack plausibility of this vulnerability have not been proven.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

There is no specific workaround mentioned for this vulnerability.

Conclusion

In conclusion, the NFS vulnerability in the Linux Kernel's nfs_get_client() function could result in a NULL dereference, potentially leading to a denial of service or arbitrary code execution. It is crucial to update the Linux Kernel to the recommended version to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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