RHSA-2026:92369HighCVSS 8.8

Red Hat Security Advisory: flatpak security update

Published
October 29, 2026
Last Modified
October 30, 2026

🔗 CVE IDs covered (4)

CVE-2026-90616 →CVE-2026-96275 →CVE-2026-96280 →CVE-2026-96808 →

📋 Description

CVE-2026-90616 — flatpak: Flatpak: Arbitrary code execution via missing symlink protection CVE-2026-96275 — flatpak: flatpak: Arbitrary write access as root via extra-data extraction CVE-2026-96280 — flatpak: flatpak: Buffer overflow in OCI delta stream path names on 32-bit systems CVE-2026-96808 — flatpak: Flatpak: Local privilege escalation via symlink traversal in revokefs writer

🎯 Affected products41

  • Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-0:1.12.7-5.el9_2.5.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-0:1.12.7-5.el9_2.5.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-0:1.12.7-5.el9_2.5.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-0:1.12.7-5.el9_2.5.src as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-0:1.12.7-5.el9_2.5.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-debuginfo-0:1.12.7-5.el9_2.5.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-debuginfo-0:1.12.7-5.el9_2.5.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-debuginfo-0:1.12.7-5.el9_2.5.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-debuginfo-0:1.12.7-5.el9_2.5.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-debuginfo-0:1.12.7-5.el9_2.5.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-debugsource-0:1.12.7-5.el9_2.5.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-debugsource-0:1.12.7-5.el9_2.5.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-debugsource-0:1.12.7-5.el9_2.5.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-debugsource-0:1.12.7-5.el9_2.5.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-debugsource-0:1.12.7-5.el9_2.5.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-libs-0:1.12.7-5.el9_2.5.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-libs-0:1.12.7-5.el9_2.5.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-libs-0:1.12.7-5.el9_2.5.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-libs-0:1.12.7-5.el9_2.5.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-libs-0:1.12.7-5.el9_2.5.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-libs-debuginfo-0:1.12.7-5.el9_2.5.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-libs-debuginfo-0:1.12.7-5.el9_2.5.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-libs-debuginfo-0:1.12.7-5.el9_2.5.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-libs-debuginfo-0:1.12.7-5.el9_2.5.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-libs-debuginfo-0:1.12.7-5.el9_2.5.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-selinux-0:1.12.7-5.el9_2.5.noarch as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-session-helper-0:1.12.7-5.el9_2.5.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-session-helper-0:1.12.7-5.el9_2.5.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • flatpak-session-helper-0:1.12.7-5.el9_2.5.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • +11 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: To reduce the risk of exploitation, users should only install Flatpak applications from trusted sources. Regularly reviewing and removing unnecessary or untrusted Flatpak applications can further limit exposure. Workaround: Avoid installing Flatpak extensions from non-trusted sources. Workaround: Only install applications from trusted OCI registries. Flatpak remotes using the default OSTree transport are not affected. Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

🔗 References (7)