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Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process. iperf3 versions prior to 3.22 contains a denial of service vulnerability that allows unauthenticated remote attackers to crash-loop the server's UDP receive worker into an unrecoverable infinite loop by sending a single crafted control-channel parameter message followed by one 16-byte UDP datagram. Attackers can permanently pin the affected per-stream receive thread at approximately 100% CPU usage, rendering the server unusable until forcibly killed with SIGKILL, as the process does not respond to normal control-channel closure.
FEDORA-2026-72fe3625a6 (iperf3-3.22-1.fc45) has been submitted as an update to Fedora 45. https://bodhi.fedoraproject.org/updates/FEDORA-2026-72fe3625a6
FEDORA-2026-c6bdc4b415 (iperf3-3.22-1.fc44) has been submitted as an update to Fedora 44. https://bodhi.fedoraproject.org/updates/FEDORA-2026-c6bdc4b415
FEDORA-2026-af72c5c990 (iperf3-3.22-2.fc43) has been submitted as an update to Fedora 43. https://bodhi.fedoraproject.org/updates/FEDORA-2026-af72c5c990
FEDORA-2026-72fe3625a6 has been pushed to the Fedora 45 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-72fe3625a6` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-72fe3625a6 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-c6bdc4b415 has been pushed to the Fedora 44 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-c6bdc4b415` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-c6bdc4b415 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-af72c5c990 has been pushed to the Fedora 43 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-af72c5c990` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-af72c5c990 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-c6bdc4b415 (iperf3-3.22-1.fc44) has been pushed to the Fedora 44 stable repository. If problem still persists, please make note of it in this bug report.
FEDORA-2026-af72c5c990 (iperf3-3.22-2.fc43) has been pushed to the Fedora 43 stable repository. If problem still persists, please make note of it in this bug report.