-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Format: 1.8 Date: Tue, 11 Aug 2026 14:02:52 +0100 Source: flatpak Architecture: source Version: 1.18.1-1 Distribution: unstable Urgency: high Maintainer: Utopia Maintenance Team <pkg-utopia-maintainers@lists.alioth.debian.org> Changed-By: Simon McVittie <smcv@debian.org> Closes: 1144130 Changes: flatpak (1.18.1-1) unstable; urgency=high . * New upstream security fix release (Closes: #1144130) - GHSA-fqx6-vh4p-42cg: Fix writing outside installation directory via crafted commit metadata. A malicious or compromised Flatpak repository could write attacker-controlled files outside /var/lib/flatpak as root. - GHSA-qrwq-7qwx-q9rp: Fix local privilege escalation involving revokefs. A malicious local user could write files outside /var/lib/flatpak as root by tampering with OSTree objects after signature verification. - GHSA-8688-9x26-hhxj: Fix a sandbox escape involving directories inside ~/.var/app/APP_ID. A malicious or compromised Flatpak app could write to arbitrary files outside its sandbox. - GHSA-99wv-m8rp-g58x: Fix a sandbox escape involving the ld.so cache. A malicious or compromised Flatpak app could write files with a fixed name and limited control over content outside the sandbox. - GHSA-v2gw-v9h5-9q4x: Fix local privilege escalation involving crafted OCI architecture names. A malicious local user on a system with an OCI remote configured (unusual on non-Fedora systems) could trick the flatpak-system-helper process into writing outside /var/lib/flatpak. - GHSA-w69g-9x8j-7p8f: Fix reading outside sandbox involving crafted extension metadata. A malicious or compromised Flatpak app could find out whether specific files exist outside the sandbox. - GHSA-q4gr-vc25-57m5: Fix anti-downgrade checks for components installed system-wide. A malicious local user with an active local login session could downgrade an app, runtime or extension to an older, known-vulnerable version and use this to attack other local users. - GHSA-8qxj-x646-phcm: Fix writing outside working directory in `flatpak build-init`. A malicious or compromised SDK could write outside the intended working directory when a developer starts using it for a build. - GHSA-jr92-2v97-wgvc: Fix a buffer overflow when installing or updating from a malicious OCI registry, not believed to be practically exploitable on 64-bit systems. - GHSA-r7hp-698j-2h6c: Correct xdg-dbus-proxy rules for receiving selected AT-SPI broadcasts so that GTK accessibility features work as intended. Previously, these accessibility features only worked accidentally as a result of an xdg-dbus-proxy security issue, fixed in 0.1.8. - Numerous non-security-related bug fixes Checksums-Sha1: 1c03d09f22fdec31cb75c907e1daf7a952bd6790 4057 flatpak_1.18.1-1.dsc f2378fd645e7fcf41e8f67849fadaecec613c22a 1355712 flatpak_1.18.1.orig.tar.xz 7fe64816a3b19373b6d6f6203a4e62e7f01cc04d 43804 flatpak_1.18.1-1.debian.tar.xz 61da1b8d64264fda5ff3f1c40db05129e8dea988 4650296 flatpak_1.18.1-1.git.tar.xz 79cabf2eca03415941e8eabaa0ab245232206862 17556 flatpak_1.18.1-1_source.buildinfo Checksums-Sha256: 84b0a6ec350cd934f60e5c21b0d0727a9d90e209fe59e7f2cbf7ced32fde93fc 4057 flatpak_1.18.1-1.dsc bc683fc916ed21c0524bb064f358c2ac18586b8ec88c76f2f7f289877521631c 1355712 flatpak_1.18.1.orig.tar.xz e863fbe3457dc2568b4ca5de3eef841c7e98813b98b3aa2476844224edf19454 43804 flatpak_1.18.1-1.debian.tar.xz dbc43065ffcea6da750db2fb8e1623ed97efce280edf2db21f1e6122f4c12b82 4650296 flatpak_1.18.1-1.git.tar.xz 3297b278511c08405e158be5ca2ca786f0ed08310a5fef31afae5fd89a0f2440 17556 flatpak_1.18.1-1_source.buildinfo Files: 776f43644f37db94e2837fc21ab56c5d 4057 admin optional flatpak_1.18.1-1.dsc f20f8b81b9bc979db057a9c2e717cf14 1355712 admin optional flatpak_1.18.1.orig.tar.xz e9d937a99d198ced639b6be170bfb6f9 43804 admin optional flatpak_1.18.1-1.debian.tar.xz b208d76105c10118cb33bc0d3f5d3b03 4650296 admin None flatpak_1.18.1-1.git.tar.xz c8906ee405d6a801b53f306b54832d4a 17556 admin optional flatpak_1.18.1-1_source.buildinfo Git-Tag-Info: tag=f6dbe0ad231a7a761f823ef3c062a237a02cab7f fp=7a073ad1ae694fa25bff62e5235c099d3eb33076 Git-Tag-Tagger: Simon McVittie <smcv@debian.org> -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEN02M5NuW6cvUwJcqYG0ITkaDwHkFAmp7K0wACgkQYG0ITkaD wHnfeQ//YweEOLWaN7D+pFQf/4AfSCvSgGF//of7pv1dZbFHLWs1FW4hYlXZ814t Br4TW4xLRWCrLCezYq1sWMf9Sp0JQgK+mrP/0YlRos6IaV0P4NTzyCyd6+kcx06s ieIWMVew99fvKt/kvmVUIwAv3idekq2dx/UBUlJMJEVDcSVfPKEJYWEt2tIsNt+V rt2owh/kxiy1Rulj3ozTjUMk4qnssmn+K33vGdwF4Y1sKeByCiZbD/TQgzlUBkp5 +nIwj+Cr7Rk/bxhmSAC2bCw0YeuhWizQXyEsM3/0I7CiYosGF43j576F7PXVAABQ 988W6U9AKHC9aPvXbASHrrJKgLRz3rIfxs9M9jsYiACfgwvmUZ276UrY1968/e/d TSIwNlwW6ISJfRrhQCzcWoqlzxyO19QsQ3N9TFU/X0DLSEF/lpg5DS/C7NgxnyWI SZrMqcTaRteSWKtAHBC5+EI2kNyBqgwDX7UGrGksqmpQAMpdPhoV2ll2p7wOF647 C5DB8DqRfPkvmI7kmeg+/hp4z7Au8K7P4dcQEDxB7DX2y8T1JU09lb+kWq8AQFZU dCBGlS0bzGg96naxsER1zwIazMp2cMthIjr2hI/luO/5CBnZJ675NkLERQmzWhs0 gWNumUiBo7Tzy8uXybyTG6Ag+gyAdns/t9xjW+J4A5KWamPkCTo= =BU4P -----END PGP SIGNATURE-----
