CVE-2026-88265: Red Hat Enterprise Linux 10

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

A flaw was found in crun. After pivot_root, reopening /dev/null for stdio can follow a symlink and attach a host file to container stdio, then change that file's ownership. 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

• 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 2026-10-02.