CVE-2009-0343: Niels Provos Systrace

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

Niels Provos Systrace 1.6f and earlier on the x86_64 Linux platform allows local users to bypass intended access restrictions by making a 32-bit syscall with a syscall number that corresponds to a policy-compliant 64-bit syscall, related to race conditions that occur in monitoring 64-bit processes.

Affected products

• Niels Provos Systrace: up to and including 1.6e; version 1.1 only; version 1.2 only; version 1.3 only; version 1.4 only; version 1.5 only; …

Published 2009-01-29. Last modified 2026-06-16.