Fedora Account System
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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. If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB RR with an rdata size of 65512, that let's an (uint16_t) variable that is used to allocate space needed for the RR wrap (because total size > 65535), causing a heap overflow. The attacker can perform a controlled (RCE class) head write of up to 65509 bytes. Even though the data is from a configured primary inside NSD's trust boundary, we do consider the risk significant enough for multi-tenant secondary DNS deployments, given the potential severity of the attack.
FEDORA-EPEL-2026-484870f7f9 (nsd-4.15.0-1.el10_3) has been submitted as an update to Fedora EPEL 10.3. https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-484870f7f9
FEDORA-2026-0b77a23312 (nsd-4.15.0-1.fc43) has been submitted as an update to Fedora 43. https://bodhi.fedoraproject.org/updates/FEDORA-2026-0b77a23312
FEDORA-EPEL-2026-484870f7f9 has been pushed to the Fedora EPEL 10.3 testing repository. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-484870f7f9 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-EPEL-2026-6030526353 has been pushed to the Fedora EPEL 10.2 testing repository. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-6030526353 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-0b77a23312 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-2026-0b77a23312` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-0b77a23312 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-d86ace09cb 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-d86ace09cb` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-d86ace09cb See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-EPEL-2026-484870f7f9 (nsd-4.15.0-1.el10_3) has been pushed to the Fedora EPEL 10.3 stable repository. If problem still persists, please make note of it in this bug report.
FEDORA-EPEL-2026-6030526353 (nsd-4.15.0-1.el10_2) has been pushed to the Fedora EPEL 10.2 stable repository. If problem still persists, please make note of it in this bug report.
FEDORA-2026-d86ace09cb (nsd-4.15.0-1.fc44) has been pushed to the Fedora 44 stable repository. If problem still persists, please make note of it in this bug report.
FEDORA-2026-0b77a23312 (nsd-4.15.0-1.fc43) has been pushed to the Fedora 43 stable repository. If problem still persists, please make note of it in this bug report.