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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. GNU libidn before 1.44 is prone to out-of-bounds reads of uninitialized memory in the ToUnicode APIs because of mishandling in idna_to_unicode_internal. The affected code is not present in libidn2.
FEDORA-2026-2291be7d88 (libidn-1.44-1.fc44) has been submitted as an update to Fedora 44. https://bodhi.fedoraproject.org/updates/FEDORA-2026-2291be7d88
FEDORA-2026-acf66846ee (libidn-1.44-1.fc43) has been submitted as an update to Fedora 43. https://bodhi.fedoraproject.org/updates/FEDORA-2026-acf66846ee
FEDORA-2026-2291be7d88 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-2026-2291be7d88` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-2291be7d88 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-acf66846ee 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-acf66846ee` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-acf66846ee See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-2291be7d88 (libidn-1.44-1.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-acf66846ee (libidn-1.44-1.fc43) has been pushed to the Fedora 43 stable repository. If problem still persists, please make note of it in this bug report.