Vulnerability in Red Hat Hardened Images

[ Description ]Official description

A flaw was found in BusyBox's mount utility. A non-root user can bypass mount security restrictions set in /etc/fstab by specifying clearing-mask options on the command line. These options pass the non-root flag filter and are merged with fstab options as strings; when the combined options are re-parsed, clearing options can override nosuid, nodev, and noexec protections the administrator intended to enforce.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund13 Oct 2026WID-SEC-2026-3914

  BusyBox: Multiple vulnerabilities Translated from German

  CVE-2026-88833CVE-2026-88834CVE-2026-88838

[ References ]References

• access.redhat.com/security/cve/CVE-2026-88838
• bugzilla.redhat.com/show_bug.cgi