Vulnerability in Red Hat Hardened Images
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.
CVSS v3 metric
CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N.
Affected products
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking)
- secalert@redhat.com
Frequently asked questions
- What is CVE-2026-88265?
- CVE-2026-88265 is a medium-severity vulnerability in Red Hat Hardened Images, classified under Improper Link Resolution Before File Access. CVSS score: 5.6/10. Published 2026-09-10.
- How severe is CVE-2026-88265?
- Medium severity. CVSS v3 base score is 5.6 out of 10.