CVE-2021-46972

CVSS 3.1 Score 5.5 of 10 (medium)

Details

Published Feb 27, 2024
Updated: Jan 8, 2025
CWE ID 401

Summary

CVE-2021-46972: A vulnerability in the Linux kernel's overlayfs filesystem has been resolved. Previously, overlayfs did not create temporary dentries during metacopy errors, resulting in dentry leaks upon superblock unmounting. This issue led to busy inodes and caused a self-destruct message. The fix for this vulnerability has been verified using a syzkaller reproducer.

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