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Linux Kernel NFSv4.2 Reference Count Leak Vulnerability

Vulnerability

A reference count leak vulnerability has been identified in the Linux kernel's NFSv4.2 implementation, specifically within the '_nfs42_proc_copy_notify()' function. The issue arises in two error handling paths where the function fails to properly balance the reference count of the 'ctx' object. This oversight, caused by an incomplete error handling process, can lead to reference count leaks.

Impact

Exploitation of this vulnerability can result in reference count leaks, potentially leading to memory management issues.

Added: Jun 9, 2025, 7:46 PM
Updated: Jun 9, 2025, 7:46 PM

Vulnerability Rating

Custom Algorithm
spread
9.0
impact
0.0
exploitability
5.3
remediation
0.0
relevance
0.0
threat
3.2
urgency
2.9
incentive
1.7

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.