CVE-2005-3783: Linux Kernel

Medium severity, CVSS 4.9. EPSS: 0.4% chance of exploitation in the next 30 days.

The ptrace functionality (ptrace.c) in Linux kernel 2.6 before 2.6.14.2, using CLONE_THREAD, does not use the thread group ID to check whether it is attaching to itself, which allows local users to cause a denial of service (crash).

Affected products

• Linux Linux Kernel: 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; version 2.6.5 only; …

Published 2005-11-23. Last modified 2026-06-16.