CVE-2016-2854: Linux Kernel

High severity, CVSS 7.8. EPSS: 1% chance of exploitation in the next 30 days.

The aufs module for the Linux kernel 3.x and 4.x does not properly maintain POSIX ACL xattr data, which allows local users to gain privileges by leveraging a group-writable setgid directory.

Affected products

• Linux Linux Kernel: from 3.0.0, up to and including 3.19.8; from 4.0.0, up to and including 4.20.15

Published 2016-05-02. Last modified 2026-06-17.