CVE-2026-88265

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.

• CWE-59

• https://access.redhat.com/security/cve/CVE-2026-88265
• https://bugzilla.redhat.com/show_bug.cgi?id=2531224
• https://github.com/containers/crun/

Published

Sep 10, 2026

Last Modified

Sep 10, 2026

Status

Awaiting Analysis

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