CVE-2006-4342: Red Hat Enterprise Linux

Medium severity, CVSS 5.5. EPSS: 0.4% chance of exploitation in the next 30 days.

The kernel in Red Hat Enterprise Linux 3, when running on SMP systems, allows local users to cause a denial of service (deadlock) by running the shmat function on an shm at the same time that shmctl is removing that shm (IPC_RMID), which prevents a spinlock from being unlocked.

Affected products

• Red Hat Enterprise Linux: version 3.0 only

Published 2006-10-17. Last modified 2026-06-16.