In systemd through 233, certain sizes passed to dns_packet_new in systemd-resolved can cause it to allocate a buffer that's too small. A malicious DNS server can exploit this via a response with a specially crafted TCP payload to trick systemd-resolved into allocating a buffer that's too small, and subsequently write arbitrary data beyond the end of it.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jun 28, 2017 |
| Debian | — | Upgrade systemd | Jul 30, 2024 | Jun 28, 2017 |
| Huawei Euleros 2_0_sp3 | — | Upgrade systemd-develUpgrade systemd-libsUpgrade systemd-pythonUpgrade systemdUpgrade libgudev1Upgrade libgudev1-develUpgrade systemd-sysv | Apr 30, 2021 | Jun 28, 2017 |
| Huawei Euleros 2_0_sp5 | — | Upgrade systemd-develUpgrade systemd-libsUpgrade systemdUpgrade systemd-pythonUpgrade systemd-sysv | Feb 15, 2019 | Jun 28, 2017 |
| Suse | — | Upgrade systemd-bash-completionUpgrade systemd-containerUpgrade systemd-journal-remoteUpgrade libudev1Upgrade systemd-sysvinitUpgrade libsystemd0Upgrade libudev-develUpgrade systemd-langUpgrade libudev1-32bitUpgrade systemd-coredumpUpgrade libsystemd0-32bitUpgrade systemd-32bitUpgrade dracut-fipsUpgrade systemd-develUpgrade systemd-docUpgrade udevUpgrade systemdUpgrade sles12sp2-docker-imageUpgrade dracut | Jul 19, 2017 | Jun 28, 2017 |
| Ubuntu | — | Upgrade systemd | Jun 29, 2017 | Jun 27, 2017 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Jun 28, 2017 |
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