Improper input validation in Linux Kernel

CVE-2016-6197

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.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.005 (39.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2016-6197?
CVE-2016-6197 is a medium-severity vulnerability in Linux Kernel, classified under Improper Input Validation. CVSS score: 5.5/10. Published 2016-08-06.
How severe is CVE-2016-6197?
Medium severity. CVSS v3 base score is 5.5 out of 10.