CVE-2012-6547: Linux Kernel

Low severity, CVSS 1.9. EPSS: 0.4% chance of exploitation in the next 30 days.

The __tun_chr_ioctl function in drivers/net/tun.c in the Linux kernel before 3.6 does not initialize a certain structure, which allows local users to obtain sensitive information from kernel stack memory via a crafted application.

Affected products

• Linux Linux Kernel: up to and including 3.5.7; 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 2013-03-15. Last modified 2026-06-16.