flatpak: In Flatpak before 1.18.1, a malicious sandboxed app can replace ~/.var/app/$appid/.ld.so with a symlink, causing rege...
CVE-2026-96807 is fixed in 11 products on 1 platform, first by DEBIAN-CVE-2026-96807, released September 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.
In Flatpak before 1.18.1, a malicious sandboxed app can replace ~/.var/app/$appid/.ld.so with a symlink, causing regenerate_ld_cache to write files at an arbitrary location. The filenames and content are not attacker controlled, making this hard to exploit.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| flatpak · Debian 13.5 (trixie) | 1.16.6-1~deb13u2 | DEBIAN-CVE-2026-96807 | Sep 24, 2026 |
| flatpak · Debian 14 | 1.18.1-1 | DEBIAN-CVE-2026-96807 | Sep 24, 2026 |
| flatpak · Fedora 43 | 1.16.6-2.fc43 | FEDORA-2026-A896CBB3F0 | Nov 7, 2026 |
| flatpak · sles 15.6 | 1.16.6-150600.3.12.1 | SUSE-SU-2026:4944-1 | Nov 7, 2026 |
| flatpak · sles 15.7 | 1.16.6-150600.3.12.1 | SUSE-SU-2026:4944-1 | Nov 7, 2026 |
| flatpak-debuginfo · Fedora 43 | 1.16.6-2.fc43 | FEDORA-2026-A896CBB3F0 | Nov 7, 2026 |
| flatpak-debugsource · Fedora 43 | 1.16.6-2.fc43 | FEDORA-2026-A896CBB3F0 | Nov 7, 2026 |
| flatpak-devel · Fedora 43 | 1.16.6-2.fc43 | FEDORA-2026-A896CBB3F0 | Nov 7, 2026 |
| flatpak-libs · Fedora 43 | 1.16.6-2.fc43 | FEDORA-2026-A896CBB3F0 | Nov 7, 2026 |
| flatpak-libs-debuginfo · Fedora 43 | 1.16.6-2.fc43 | FEDORA-2026-A896CBB3F0 | Nov 7, 2026 |
| flatpak-selinux · Fedora 43 | 1.16.6-2.fc43 | FEDORA-2026-A896CBB3F0 | Nov 7, 2026 |
| flatpak-session-helper · Fedora 43 | 1.16.6-2.fc43 | FEDORA-2026-A896CBB3F0 | Nov 7, 2026 |
| flatpak-session-helper-debuginfo · Fedora 43 | 1.16.6-2.fc43 | FEDORA-2026-A896CBB3F0 | Nov 7, 2026 |
| flatpak-tests · Fedora 43 | 1.16.6-2.fc43 | FEDORA-2026-A896CBB3F0 | Nov 7, 2026 |
| flatpak-tests-debuginfo · Fedora 43 | 1.16.6-2.fc43 | FEDORA-2026-A896CBB3F0 | Nov 7, 2026 |
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