CVE-2013-4270: Linux Kernel

Low severity, CVSS 3.6. EPSS: 0.5% chance of exploitation in the next 30 days.

The net_ctl_permissions function in net/sysctl_net.c in the Linux kernel before 3.11.5 does not properly determine uid and gid values, which allows local users to bypass intended /proc/sys/net restrictions via a crafted application.

Affected products

• Linux Linux Kernel: up to and including 3.11.4; 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 2013-12-09. Last modified 2026-06-16.