CVE-2022-50451
Linux Kernel vulnerability analysis and mitigation

Overview

A memory leak vulnerability was identified in the Linux kernel's NTFS3 filesystem implementation, specifically in the ntfsfillsuper() error path. The vulnerability was assigned CVE-2022-50451. The issue was discovered by syzbot, which reported a kmemleak showing an unreferenced object of size 32 bytes (NVD).

Technical details

The vulnerability manifests as a memory leak in the ntfsfillsuper() function's error path within the NTFS3 filesystem code. The issue occurs when mount options are not properly freed during error handling. The bug was detected through kmemleak reporting an unreferenced object at address 0xffff8880122f1540 with a size of 32 bytes. The backtrace shows the leak originates in the ntfsinitfs_context function (NVD).

Impact

The memory leak could lead to gradual system resource consumption over time, potentially affecting system stability and performance when mounting NTFS3 filesystems under error conditions (NVD).

Mitigation and workarounds

The issue has been resolved by implementing proper cleanup of mount options in the error path of ntfsfillsuper(). Users should update to patched kernel versions that include this fix (NVD).

Additional resources


SourceThis report was generated using AI

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