https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 06 Oct 2026 16:18:03 +0000 https://cve.radiocsirt.org/vuln/cve-2026-55717 <p><strong>Affected:</strong> NLnet Labs Unbound</p> <p>In NLnet Labs Unbound 1.10.0 up to and including 1.25.1, when &#39;serve-expired: yes&#39; is set together with a &#39;response-ip: &lt;net&gt; redirect&#39; /&#39;response-ip-data: &lt;net&gt; CNAME &lt;target&gt;&#39; rule (or the RPZ &#39;rpz-cname-override&#39; equivalent), a remote client who controls any delegated domain can crash the daemon. The serve-expired-client-timeout callback runs a two-pass loop to chase the respip-generated CNAME alias; on the second pass it resets &#39;alias_rrset&#39; but not &#39;partial_rep&#39;. Later, this inconsistency leads to a NULL pointer dereference and an eventual crash. A malicious actor can exploit the vulnerability by controlling any zone that replies with an A/AAAA record that falls inside the configured response-ip/rpz subnet. By delaying the answer when the previous record has expired, the vulnerable path of &#39;serve-expired-client-timeout&#39; is taken leading to denial of service via the server crash.</p> <p><strong>Affected:</strong> NLnet Labs Unbound</p> <p>In NLnet Labs Unbound 1.10.0 up to and including 1.25.1, when &#39;serve-expired: yes&#39; is set together with a &#39;response-ip: &lt;net&gt; redirect&#39; /&#39;response-ip-data: &lt;net&gt; CNAME &lt;target&gt;&#39; rule (or the RPZ &#39;rpz-cname-override&#39; equivalent), a remote client who controls any delegated domain can crash the daemon. The serve-expired-client-timeout callback runs a two-pass loop to chase the respip-generated CNAME alias; on the second pass it resets &#39;alias_rrset&#39; but not &#39;partial_rep&#39;. Later, this inconsistency leads to a NULL pointer dereference and an eventual crash. A malicious actor can exploit the vulnerability by controlling any zone that replies with an A/AAAA record that falls inside the configured response-ip/rpz subnet. By delaying the answer when the previous record has expired, the vulnerable path of &#39;serve-expired-client-timeout&#39; is taken leading to denial of service via the server crash.</p> https://cve.radiocsirt.org/vuln/cve-2026-55717