Improper Input Validation Affecting torvalds/linux package, versions [,4.6)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.04% (11th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3006309
  • published26 Jan 2022
  • disclosed6 Aug 2016
  • creditUnknown

Introduced: 6 Aug 2016

CVE-2016-6197  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 4.6 or higher.

Overview

Affected versions of this package are vulnerable to Improper Input Validation 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.

CVSS Base Scores

version 3.1