CVE-2009-4131: Linux Kernel

High severity, CVSS 7.2. EPSS: 0.8% chance of exploitation in the next 30 days.

The EXT4_IOC_MOVE_EXT (aka move extents) ioctl implementation in the ext4 filesystem in the Linux kernel before 2.6.32-git6 allows local users to overwrite arbitrary files via a crafted request, related to insufficient checks for file permissions.

Affected products

• Linux Linux Kernel: up to and including 2.6.32; version 2.6.0 only; version 2.6.1 only; version 2.6.2 only; version 2.6.3 only; version 2.6.4 only; …

Published 2009-12-13. Last modified 2026-06-16.