Vulnerability in Red Hat Hardened Images

[ Description ]Official description

A flaw was found in busybox. The tar applet's deferred link-creation handling for symlink and hardlink entries with unsafe-looking targets does not validate that the resolved destination remains inside the extraction directory once the deferred link is created. An attacker can craft a tar archive using a symlink target of exactly '..' combined with a deferred hardlink to create a new file outside the extraction directory, or reuse an extraction directory across two archives to replace an existing file outside it. If the archive is extracted with elevated privileges, this flaw can lead to privilege escalation or arbitrary code execution.

[ 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-Bund11 Oct 2026WID-SEC-2026-3853

  BusyBox: Vulnerability allows code execution Translated from German

  CVE-2026-108119

[ References ]References

• access.redhat.com/errata/RHSA-2026:81391
• access.redhat.com/security/cve/CVE-2026-108119
• bugzilla.redhat.com/show_bug.cgi