CVE-2026-88264: Containers Crun

Medium severity, CVSS 5.6. EPSS: 0.1% chance of exploitation in the next 30 days.

A flaw was found in crun. When the container configuration does not give /dev a dedicated mount, terminal setup can redirect /dev/console onto an attacker-controlled path, including via the read-only-rootfs bind-mount fallback. Affected versions are crun 1.29.1 and earlier. Default configurations that mount a fresh /dev are not exposed. No fixed release is available yet.

Affected products

• Containers Crun: up to and including 1.29.1
• Red Hat Red Hat Enterprise Linux 10
• Red Hat Red Hat Enterprise Linux 8
• Red Hat Red Hat Enterprise Linux 9
• Red Hat Red Hat Hardened Images: before 1.30-1.hum1 (fixed in 1.30-1.hum1)
• Red Hat Red Hat Openshift Container Platform 4

Published 2026-09-10. Last modified 2026-09-25.