SUSE CVE-2026-55973

In NLnet Labs Unbound 1.23.0 up to and including 1.25.1, when 'dns-error-reporting: yes' is set, the EDNS Report-Channel option code 18 from the last upstream response is read and uses the option's length as the length of the agent domain. When a domain name check is performed on the agent domain...

CVE-2026-55973

In NLnet Labs Unbound 1.23.0 up to and including 1.25.1, when 'dns-error-reporting: yes' is set, the EDNS Report-Channel option code 18 from the last upstream response is read and uses the option's length as the length of the agent domain. When a domain name check is performed on the agent domain...

CVE-2026-55973

In NLnet Labs Unbound 1.23.0 up to and including 1.25.1, when 'dns-error-reporting: yes' is set, the EDNS Report-Channel option code 18 from the last upstream response is read and uses the option's length as the length of the agent domain. When a domain name check is performed on the agent domain...

unbound: Unbound: Denial of Service via malformed EDNS Report-Channel option

A flaw was found in Unbound. When the 'dns-error-reporting: yes' option is enabled, a remote attacker can send a specially crafted DNS response containing a malformed EDNS Report-Channel option from a delegated zone they control. This can lead to a stack variable overwrite, causing the Unbound...

CVE-2026-55973

In NLnet Labs Unbound 1.23.0 up to and including 1.25.1, when 'dns-error-reporting: yes' is set, the EDNS Report-Channel option code 18 from the last upstream response is read and uses the option's length as the length of the agent domain. When a domain name check is performed on the agent domain...

EUVD-2026-47681

In NLnet Labs Unbound 1.23.0 up to and including 1.25.1, when 'dns-error-reporting: yes' is set, the EDNS Report-Channel option code 18 from the last upstream response is read and uses the option's length as the length of the agent domain. When a domain name check is performed on the agent domain...

CVE-2026-55973 'dns-error-reporting: yes' leads to stack buffer overflow

In NLnet Labs Unbound 1.23.0 up to and including 1.25.1, when 'dns-error-reporting: yes' is set, the EDNS Report-Channel option code 18 from the last upstream response is read and uses the option's length as the length of the agent domain. When a domain name check is performed on the agent domain...

PT-2026-63389

Name of the Vulnerable Software and Affected Versions NLnet Labs Unbound versions 1.23.0 through 1.25.1 Description When the dns-error-reporting: yes setting is enabled, the software incorrectly processes the EDNS Report-Channel option code 18 from upstream responses. Specifically, it uses the...

unbound security update

1.24.2-15 - Fix CVE-2026-42534: Jostle logic bypass degrades resolution performance 1.24.2-14 - Fix CVE-2026-41292: DoS via excessive EDNS options 1.24.2-13 - Add upstream unit test for CVE-2026-40622 1.24.2-12 - Fix CVE-2026-44390: DoS with large RRsets 1.24.2-11 - Fix CVE-2026-40622: cache...

CVE-2026-64193

CVE-2026-64193 affects Net::DNS for Perl up to version 1.55. The vulnerability arises in Net::DNS::RR::OPT::EXTENDED_ERROR::_decompose, which tokenizes the EXTRA-TEXT field of EDNS EXTENDED-ERROR (RFC 8914) and passes the result to Perl’s eval. Some escaping is applied for $ and @, but not for ba...

CVE-2026-64193

Net::DNS versions through 1.55 for Perl allow remote execution injection via EDNS EXTENDED ERROR. Net::DNS::RR::OPT::EXTENDEDERROR::decompose parses the EXTRA-TEXT field of an EDNS EXTENDED-ERROR option RFC 8914 by tokenising the raw bytes and passing the result to Perl's eval. There is some...

Linux Distros Unpatched Vulnerability : CVE-2026-64193

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Net::DNS versions through 1.55 for Perl allow remote execution injection via EDNS EXTENDED ERROR. Net::DNS::RR::OPT::EXTENDEDERROR::decompose parses the...

CVE-2026-62299

CoreDNS is a DNS server written in Go. Prior to 1.14.5, the CoreDNS rewrite plugin supports edns0 rewrite rules with an optional revert flag, and two response rules, edns0SetResponseRule and edns0ReplaceResponseRuleT in plugin/rewrite/edns0.go, call res.IsEdns0 and immediately dereference the...

CVE-2026-62299

CoreDNS (rewrite plugin, edns0.go) prior to version 1.14.5 could panic when a downstream plugin returns a response with no OPT record. The code path in edns0.go dereferenced a DNS OPT without a nil check, triggered by a query matching a rewrite edns0 rule (local/nsid/subnet with set/append/replac...

CVE-2026-33630

A flaw was found in c-ares. A use-after-free / double-free vulnerability exists in the query-completion handling path, where a query callback is invoked while the query is still linked in internal lookup structures. A remote attacker can exploit this via aresgetaddrinfo over TCP by sending crafte...

Important: Red Hat Security Advisory: unbound security update

An update for unbound is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from...

Use After Free

Overview Affected versions of this package are vulnerable to Use After Free in the query completion process. An attacker can cause memory corruption and application crash by sending crafted DNS responses that manipulate the sequence of query completions, such as forcing an EDNS-downgrade retry an...

Linux Distros Unpatched Vulnerability : CVE-2026-42004

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An attacker can send a crafted EDNS OPT record that will be ignored by DNSdist's filtering rules, but will be rewritten as a valid OPT record when EDNS Client...

CVE-2026-52690 Spoofed answers can mark an authoritative non-EDNS capable

Spoofing replies to Recursor might mark an IP of an authoritative server as not supporting EDNS, causing valdiation of DNSSEC records served by that server to fail...

CVE-2026-42004

CVE-2026-42004 affects DNSdist via EDNS OPT handling. An attacker can craft an EDNS OPT record that DNSdist’s filtering ignores, but is rewritten to a valid OPT when EDNS Client Subnet is applied, allowing the backend to observe EDNS options DNSdist did not filter. Impact is limited to informatio...