VULNERABILITY INTELLIGENCE

CVE-2016-6197

CVSS score5.5 MEDIUM
EPSS probability0.51%
CISA KEVNot currently listed
Published2016-08-06
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

fs/overlayfs/dir.c in the OverlayFS filesystem implementation in the Linux kernel before 4.6 does not properly verify the upper dentry before proceeding with unlink and rename system-call processing, which allows local users to cause a denial of service (system crash) via a rename system call that specifies a self-hardlink.

Weakness classification

  • CWE-20: Improper Input Validation

Primary references