Vulnerability in Red Hat Enterprise Linux 10

[ Description ]Official description

A malicious or compromised Flatpak repository can write attacker-controlled content to arbitrary locations on the host filesystem via extract_extra_data(). On system installs, the write happens as root. Two issues combine: `files/extra` is resolved via path operations that follow symlinks, and blob names from `xa.extra-data-sources` are not sanitized against `..` traversal.

[ 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-2026-3861

  Red Hat Enterprise Linux (flatpak): Multiple vulnerabilities Translated from German

  CVE-2026-90616CVE-2026-96808CVE-2026-86320+2 more CVEs

[ References ]References

• access.redhat.com/errata/RHSA-2026:80497
• access.redhat.com/errata/RHSA-2026:80498
• access.redhat.com/errata/RHSA-2026:80687
• access.redhat.com/security/cve/CVE-2026-96275
• bugzilla.redhat.com/show_bug.cgi
• github.com/flatpak/flatpak/security/advisories/GHSA-fqx6-vh4p-42cg