https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Sat, 03 Oct 2026 19:23:33 +0000 https://cve.radiocsirt.org/vuln/euvd-2026-369633 EUVD-2026-369633 https://cve.radiocsirt.org/vuln/euvd-2026-369633 https://cve.radiocsirt.org/vuln/fkie_cve-2026-78227 <p>NLnet Labs Unbound 1.22.0 up to and including 1.26.1, has a use-after-free vulnerability when compiled for DNS-over-QUIC support with &#39;--with-libngtcp2&#39;. Each DoQ stream owns an output buffer that holds the DNS response. ngtcp2&#39;s retransmission buffer keeps a shallow pointer into the output buffer for as long as a STREAM frame may be resent. On a client RESET_STREAM, the output buffer is freed but ngtcp2 still holds the matching retransmission entries. The next PTO timeout makes ngtcp2 re-encode the STREAM frame and copy from the freed buffer. A malicious actor that can query Unbound over DoQ and that withholds ACKs, sends RESET_STREAM, and waits for PTO, reaches this use-after-free with no privilege. This leads to retransmissions against freed memory and eventually an abnormal server exit under a 20-query spray.</p> <p>NLnet Labs Unbound 1.22.0 up to and including 1.26.1, has a use-after-free vulnerability when compiled for DNS-over-QUIC support with &#39;--with-libngtcp2&#39;. Each DoQ stream owns an output buffer that holds the DNS response. ngtcp2&#39;s retransmission buffer keeps a shallow pointer into the output buffer for as long as a STREAM frame may be resent. On a client RESET_STREAM, the output buffer is freed but ngtcp2 still holds the matching retransmission entries. The next PTO timeout makes ngtcp2 re-encode the STREAM frame and copy from the freed buffer. A malicious actor that can query Unbound over DoQ and that withholds ACKs, sends RESET_STREAM, and waits for PTO, reaches this use-after-free with no privilege. This leads to retransmissions against freed memory and eventually an abnormal server exit under a 20-query spray.</p> https://cve.radiocsirt.org/vuln/fkie_cve-2026-78227 https://cve.radiocsirt.org/vuln/ghsa-jwvw-q5m4-rjxh <p>NLnet Labs Unbound 1.22.0 up to and including 1.26.1, has a use-after-free vulnerability when compiled for DNS-over-QUIC support with &#39;--with-libngtcp2&#39;. Each DoQ stream owns an output buffer that holds the DNS response. ngtcp2&#39;s retransmission buffer keeps a shallow pointer into the output buffer for as long as a STREAM frame may be resent. On a client RESET_STREAM, the output buffer is freed but ngtcp2 still holds the matching retransmission entries. The next PTO timeout makes ngtcp2 re-encode the STREAM frame and copy from the freed buffer. A malicious actor that can query Unbound over DoQ and that withholds ACKs, sends RESET_STREAM, and waits for PTO, reaches this use-after-free with no privilege. This leads to retransmissions against freed memory and eventually an abnormal server exit under a 20-query spray.</p> <p>NLnet Labs Unbound 1.22.0 up to and including 1.26.1, has a use-after-free vulnerability when compiled for DNS-over-QUIC support with &#39;--with-libngtcp2&#39;. Each DoQ stream owns an output buffer that holds the DNS response. ngtcp2&#39;s retransmission buffer keeps a shallow pointer into the output buffer for as long as a STREAM frame may be resent. On a client RESET_STREAM, the output buffer is freed but ngtcp2 still holds the matching retransmission entries. The next PTO timeout makes ngtcp2 re-encode the STREAM frame and copy from the freed buffer. A malicious actor that can query Unbound over DoQ and that withholds ACKs, sends RESET_STREAM, and waits for PTO, reaches this use-after-free with no privilege. This leads to retransmissions against freed memory and eventually an abnormal server exit under a 20-query spray.</p> https://cve.radiocsirt.org/vuln/ghsa-jwvw-q5m4-rjxh https://cve.radiocsirt.org/vuln/msrc_cve-2026-78227 msrc_CVE-2026-78227 https://cve.radiocsirt.org/vuln/msrc_cve-2026-78227 https://cve.radiocsirt.org/vuln/opensuse-su-2026:11930-1 <p>libunbound8-1.26.1-1.1 on GA media</p> <p>libunbound8-1.26.1-1.1 on GA media</p> https://cve.radiocsirt.org/vuln/opensuse-su-2026:11930-1 https://cve.radiocsirt.org/vuln/rhsa-2026:68590 <p>unbound: Unbound: Denial of Service via &#39;serve-expired&#39; code path bypass unbound: Unbound: ZONEMD verification bypass due to asynchronous DNSSEC resolution unbound: Unbound: Denial of Service via use-after-free in DoQ stream output buffer unbound: Unbound: Denial of Service via continuous queries on TCP/DoT connection unbound: Unbound: Heap buffer overflow via malicious DNSSEC response unbound: Unbound: Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY unbound: Unbound: Remote Code Execution Vulnerability in CNAME Synthesis unbound: Unbound: Denial of Service via use-after-free in DoH stream cleanup unbound: Unbound: Denial of Service via algorithmic complexity attacks on DNSSEC</p> <p>unbound: Unbound: Denial of Service via &#39;serve-expired&#39; code path bypass unbound: Unbound: ZONEMD verification bypass due to asynchronous DNSSEC resolution unbound: Unbound: Denial of Service via use-after-free in DoQ stream output buffer unbound: Unbound: Denial of Service via continuous queries on TCP/DoT connection unbound: Unbound: Heap buffer overflow via malicious DNSSEC response unbound: Unbound: Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY unbound: Unbound: Remote Code Execution Vulnerability in CNAME Synthesis unbound: Unbound: Denial of Service via use-after-free in DoH stream cleanup unbound: Unbound: Denial of Service via algorithmic complexity attacks on DNSSEC</p> https://cve.radiocsirt.org/vuln/rhsa-2026:68590 https://cve.radiocsirt.org/vuln/ubuntu-cve-2026-78227 <p><strong>Affected:</strong> Ubuntu:Pro:14.04:LTS: unbound, Ubuntu:Pro:16.04:LTS: unbound, Ubuntu:Pro:18.04:LTS: unbound, Ubuntu:Pro:20.04:LTS: unbound, Ubuntu:22.04:LTS: unbound, Ubuntu:24.04:LTS: unbound, Ubuntu:26.04:LTS: unbound</p> <p>NLnet Labs Unbound 1.22.0 up to and including 1.26.1, has a use-after-free vulnerability when compiled for DNS-over-QUIC support with &#39;--with-libngtcp2&#39;. Each DoQ stream owns an output buffer that holds the DNS response. ngtcp2&#39;s retransmission buffer keeps a shallow pointer into the output buffer for as long as a STREAM frame may be resent. On a client RESET_STREAM, the output buffer is freed but ngtcp2 still holds the matching retransmission entries. The next PTO timeout makes ngtcp2 re-encode the STREAM frame and copy from the freed buffer. A malicious actor that can query Unbound over DoQ and that withholds ACKs, sends RESET_STREAM, and waits for PTO, reaches this use-after-free with no privilege. This leads to retransmissions against freed memory and eventually an abnormal server exit under a 20-query spray.</p> <p><strong>Affected:</strong> Ubuntu:Pro:14.04:LTS: unbound, Ubuntu:Pro:16.04:LTS: unbound, Ubuntu:Pro:18.04:LTS: unbound, Ubuntu:Pro:20.04:LTS: unbound, Ubuntu:22.04:LTS: unbound, Ubuntu:24.04:LTS: unbound, Ubuntu:26.04:LTS: unbound</p> <p>NLnet Labs Unbound 1.22.0 up to and including 1.26.1, has a use-after-free vulnerability when compiled for DNS-over-QUIC support with &#39;--with-libngtcp2&#39;. Each DoQ stream owns an output buffer that holds the DNS response. ngtcp2&#39;s retransmission buffer keeps a shallow pointer into the output buffer for as long as a STREAM frame may be resent. On a client RESET_STREAM, the output buffer is freed but ngtcp2 still holds the matching retransmission entries. The next PTO timeout makes ngtcp2 re-encode the STREAM frame and copy from the freed buffer. A malicious actor that can query Unbound over DoQ and that withholds ACKs, sends RESET_STREAM, and waits for PTO, reaches this use-after-free with no privilege. This leads to retransmissions against freed memory and eventually an abnormal server exit under a 20-query spray.</p> https://cve.radiocsirt.org/vuln/ubuntu-cve-2026-78227 https://cve.radiocsirt.org/vuln/wid-sec-w-2026-3392 <p>Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Unbound ausnutzen, um Sicherheitsmaßnahmen zu umgehen, Speicher zu korrumpieren, einen Denial of Service zu verursachen oder Code auszuführen.</p> <p>Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Unbound ausnutzen, um Sicherheitsmaßnahmen zu umgehen, Speicher zu korrumpieren, einen Denial of Service zu verursachen oder Code auszuführen.</p> https://cve.radiocsirt.org/vuln/wid-sec-w-2026-3392