RLSA-2026:21757

Synopsis

Important: flatpak security update

Description

Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux.

Security Fix(es):

* flatpak: Flatpak: Arbitrary code execution via crafted symlinks in sandbox-expose options (CVE-2026-34078)

* flatpak: Flatpak: Arbitrary file deletion on host via improper cache file path validation (CVE-2026-34079)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Affected products

Rocky Linux 10 aarch64 Rocky Linux 10 ppc64le Rocky Linux 10 riscv64 Rocky Linux 10 s390x Rocky Linux 10 x86_64

Fixes

2456284 2456276

CVEs

CVE-2026-34078 CVE-2026-34079

Affected packages

Rocky Linux 10 s390x - AppStream

flatpak-session-helper-0:1.16.0-9.el10_2.1.s390x.rpm flatpak-libs-debuginfo-0:1.16.0-9.el10_2.1.s390x.rpm flatpak-libs-0:1.16.0-9.el10_2.1.s390x.rpm flatpak-selinux-0:1.16.0-9.el10_2.1.noarch.rpm flatpak-debugsource-0:1.16.0-9.el10_2.1.s390x.rpm flatpak-session-helper-debuginfo-0:1.16.0-9.el10_2.1.s390x.rpm flatpak-0:1.16.0-9.el10_2.1.src.rpm flatpak-debuginfo-0:1.16.0-9.el10_2.1.s390x.rpm flatpak-0:1.16.0-9.el10_2.1.s390x.rpm

Rocky Linux 10 x86_64 - AppStream

flatpak-0:1.16.0-9.el10_2.1.x86_64.rpm flatpak-session-helper-0:1.16.0-9.el10_2.1.x86_64.rpm flatpak-debugsource-0:1.16.0-9.el10_2.1.x86_64.rpm flatpak-session-helper-debuginfo-0:1.16.0-9.el10_2.1.x86_64.rpm flatpak-selinux-0:1.16.0-9.el10_2.1.noarch.rpm flatpak-libs-debuginfo-0:1.16.0-9.el10_2.1.x86_64.rpm flatpak-0:1.16.0-9.el10_2.1.src.rpm flatpak-debuginfo-0:1.16.0-9.el10_2.1.x86_64.rpm flatpak-libs-0:1.16.0-9.el10_2.1.x86_64.rpm

Rocky Linux 10 ppc64le - AppStream

flatpak-libs-0:1.16.0-9.el10_2.1.ppc64le.rpm flatpak-0:1.16.0-9.el10_2.1.ppc64le.rpm flatpak-session-helper-0:1.16.0-9.el10_2.1.ppc64le.rpm flatpak-debuginfo-0:1.16.0-9.el10_2.1.ppc64le.rpm flatpak-libs-debuginfo-0:1.16.0-9.el10_2.1.ppc64le.rpm flatpak-debugsource-0:1.16.0-9.el10_2.1.ppc64le.rpm flatpak-selinux-0:1.16.0-9.el10_2.1.noarch.rpm flatpak-0:1.16.0-9.el10_2.1.src.rpm flatpak-session-helper-debuginfo-0:1.16.0-9.el10_2.1.ppc64le.rpm

Rocky Linux 10 s390x - CRB

flatpak-devel-0:1.16.0-9.el10_2.1.s390x.rpm

Rocky Linux 10 aarch64 - AppStream

flatpak-debugsource-0:1.16.0-9.el10_2.1.aarch64.rpm flatpak-selinux-0:1.16.0-9.el10_2.1.noarch.rpm flatpak-0:1.16.0-9.el10_2.1.aarch64.rpm flatpak-libs-0:1.16.0-9.el10_2.1.aarch64.rpm flatpak-session-helper-0:1.16.0-9.el10_2.1.aarch64.rpm flatpak-session-helper-debuginfo-0:1.16.0-9.el10_2.1.aarch64.rpm flatpak-0:1.16.0-9.el10_2.1.src.rpm flatpak-libs-debuginfo-0:1.16.0-9.el10_2.1.aarch64.rpm flatpak-debuginfo-0:1.16.0-9.el10_2.1.aarch64.rpm

Rocky Linux 10 aarch64 - CRB

flatpak-devel-0:1.16.0-9.el10_2.1.aarch64.rpm

Rocky Linux 10 riscv64 - AppStream

flatpak-selinux-0:1.16.0-9.el10_2.1.noarch.rpm flatpak-0:1.16.0-9.el10_2.1.src.rpm

Rocky Linux 10 x86_64 - CRB

flatpak-devel-0:1.16.0-9.el10_2.1.x86_64.rpm

Rocky Linux 10 ppc64le - CRB

flatpak-devel-0:1.16.0-9.el10_2.1.ppc64le.rpm