CVE-2009-1527: Linux Kernel

Medium severity, CVSS 6.9. EPSS: 0.5% chance of exploitation in the next 30 days.

Race condition in the ptrace_attach function in kernel/ptrace.c in the Linux kernel before 2.6.30-rc4 allows local users to gain privileges via a PTRACE_ATTACH ptrace call during an exec system call that is launching a setuid application, related to locking an incorrect cred_exec_mutex object.

Affected products

• Linux Linux Kernel: up to and including 2.6.29; version 2.6.30 only

Published 2009-05-05. Last modified 2026-06-16.