CVE-2013-1858: Linux Kernel

High severity, CVSS 7.2. EPSS: 1.7% chance of exploitation in the next 30 days.

The clone system-call implementation in the Linux kernel before 3.8.3 does not properly handle a combination of the CLONE_NEWUSER and CLONE_FS flags, which allows local users to gain privileges by calling chroot and leveraging the sharing of the / directory between a parent process and a child process.

Affected products

• Linux Linux Kernel: up to and including 3.8.2; version 3.0 only; version 3.0.1 only; version 3.0.2 only; version 3.0.3 only; version 3.0.4 only; …

Published 2013-04-05. Last modified 2026-06-16.