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In systemd 240, bus_open_system_watch_bind_with_description in shared/bus-util.c (as used by systemd-resolved to connect to the system D-Bus instance), calls sd_bus_set_trusted, which disables access controls for incoming D-Bus messages. An unprivileged user can exploit this by executing D-Bus methods that should be restricted to privileged users, in order to change the system's DNS resolver settings.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Sep 4, 2019 |
| Centos_linux | — | Upgrade systemd-pam-debuginfoUpgrade systemd-libs-debuginfoUpgrade systemd-tests-debuginfoUpgrade systemd-debuginfoUpgrade systemd-libsUpgrade systemd-develUpgrade systemd-udev-debuginfoUpgrade systemd-testsUpgrade systemd-containerUpgrade systemd-debugsourceUpgrade systemd-udevUpgrade systemd-container-debuginfoUpgrade systemd-journal-remoteUpgrade systemd-journal-remote-debuginfoUpgrade systemdUpgrade systemd-pam | Nov 6, 2019 | Sep 4, 2019 |
| Debian | — | Upgrade systemd | Jul 30, 2024 | Sep 4, 2019 |
| Huawei Euleros 2_0_sp8 | — | Upgrade systemdUpgrade systemd-udevUpgrade systemd-udev-compatUpgrade systemd-journal-remoteUpgrade systemd-develUpgrade systemd-libsUpgrade systemd-pamUpgrade systemd-container | Nov 19, 2019 | Sep 4, 2019 |
| Oracle_linux | — | Upgrade systemd-pamUpgrade systemd-develUpgrade systemd-journal-remoteUpgrade systemdUpgrade systemd-containerUpgrade systemd-testsUpgrade systemd-udevUpgrade systemd-libs | Oct 5, 2022 | Sep 3, 2019 |
| Redhat Openshift | — | Upgrade redhat-coreos | Dec 29, 2020 | Sep 4, 2019 |
| Redhat_linux | — | Upgrade systemd-journal-remote-debuginfoUpgrade systemd-develUpgrade systemd-pam-debuginfoUpgrade systemd-pamUpgrade systemd-tests-debuginfoUpgrade systemd-container-debuginfoUpgrade systemd-journal-remoteUpgrade systemd-debugsourceUpgrade systemd-containerUpgrade systemd-udevUpgrade systemd-udev-debuginfoUpgrade systemd-testsUpgrade systemd-libs-debuginfoUpgrade systemdUpgrade systemd-debuginfoUpgrade systemd-libs | Nov 6, 2019 | Sep 4, 2019 |
| Ubuntu | — | Upgrade systemd | Sep 4, 2019 | Sep 3, 2019 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Sep 4, 2019 |
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