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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. Nmap through 7.99 does not keep the IPv6 extension-header walk within the captured packet in ipv6_get_data_primitive (libnetutil/netutil.cc), so the pointer advances past the buffer and the remaining-length computation underflows to a large value. A scanned target or on-path attacker returning a crafted IPv6 response with a truncated extension header can trigger out-of-bounds reads and a crash during raw IPv6 scans.
The fixing commit: https://github.com/nmap/nmap/commit/bb6754e
FEDORA-2026-0245fd9f84 (nmap-7.92-11.fc45) has been submitted as an update to Fedora 45. https://bodhi.fedoraproject.org/updates/FEDORA-2026-0245fd9f84
FEDORA-2026-3b30fa1da4 (nmap-7.92-11.fc44) has been submitted as an update to Fedora 44. https://bodhi.fedoraproject.org/updates/FEDORA-2026-3b30fa1da4
FEDORA-2026-602d919dbc (nmap-7.92-8.fc43) has been submitted as an update to Fedora 43. https://bodhi.fedoraproject.org/updates/FEDORA-2026-602d919dbc
FEDORA-2026-3b30fa1da4 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-2026-3b30fa1da4` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-3b30fa1da4 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-602d919dbc 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-2026-602d919dbc` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-602d919dbc See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-0245fd9f84 (nmap-7.92-11.fc45) has been pushed to the Fedora 45 stable repository. If problem still persists, please make note of it in this bug report.
FEDORA-2026-3b30fa1da4 (nmap-7.92-11.fc44) has been pushed to the Fedora 44 stable repository. If problem still persists, please make note of it in this bug report.