knot-doq

Knot Resolver 6.3.0 — DNS-over-QUIC heap overflow → RCE PoC Proof-of-concept for a remotely triggerable heap buffer overflow in Knot Resolver's DNS-over-QUIC DoQ receive path that yields remote code execution as the knot-resolver service user. Component: kresd DoQ listener daemon/quicconn.c...

AZL-109824 CVE-2026-97206 affecting package unbound 1.26.1-1

NLnet Labs Unbound, 1.22.0 up to and including version 1.26.1, contains a DNS-over-QUIC DoQ lifetime bug reachable by a remote DoQ client under multi-threaded operation. A client-triggered QUIC path migration can enter stream/connection cleanup while a mesh reply still retains a pointer to the Do...

DEBIAN-CVE-2026-97206

NLnet Labs Unbound, 1.22.0 up to and including version 1.26.1, contains a DNS-over-QUIC DoQ lifetime bug reachable by a remote DoQ client under multi-threaded operation. A client-triggered QUIC path migration can enter stream/connection cleanup while a mesh reply still retains a pointer to the Do...

CVE-2026-97206

NLnet Labs Unbound, 1.22.0 up to and including version 1.26.1, contains a DNS-over-QUIC DoQ lifetime bug reachable by a remote DoQ client under multi-threaded operation. A client-triggered QUIC path migration can enter stream/connection cleanup while a mesh reply still retains a pointer to the Do...

EUVD-2026-107154

NLnet Labs Unbound, 1.22.0 up to and including version 1.26.1, contains a DNS-over-QUIC DoQ lifetime bug reachable by a remote DoQ client under multi-threaded operation. A client-triggered QUIC path migration can enter stream/connection cleanup while a mesh reply still retains a pointer to the Do...

CVE-2026-97206 DNS-over-QUIC (DoQ) path-migration can lead to use-after-free on multi-threaded deployments.

NLnet Labs Unbound, 1.22.0 up to and including version 1.26.1, contains a DNS-over-QUIC DoQ lifetime bug reachable by a remote DoQ client under multi-threaded operation. A client-triggered QUIC path migration can enter stream/connection cleanup while a mesh reply still retains a pointer to the Do...

CVE-2026-97206

NLnet Labs Unbound versions 1.22.0 up to and including 1.26.1 are vulnerable to a DNS-over-QUIC (DoQ) lifetime bug . Under multi-threaded operation, a client-triggered QUIC path migration can trigger stream/connection cleanup while a mesh reply still holds a pointer to the DoQ stream. This result...

CVE-2026-97206

NLnet Labs Unbound, 1.22.0 up to and including version 1.26.1, contains a DNS-over-QUIC DoQ lifetime bug reachable by a remote DoQ client under multi-threaded operation. A client-triggered QUIC path migration can enter stream/connection cleanup while a mesh reply still retains a pointer to the Do...

PT-2026-120516

NLnet Labs Unbound, 1.22.0 up to and including version 1.26.1, contains a DNS-over-QUIC DoQ lifetime bug reachable by a remote DoQ client under multi-threaded operation. A client-triggered QUIC path migration can enter stream/connection cleanup while a mesh reply still retains a pointer to the Do...

Linux Distros Unpatched Vulnerability : CVE-2026-97206

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - NLnet Labs Unbound, 1.22.0 up to and including version 1.26.1, contains a DNS-over-QUIC DoQ lifetime bug reachable by a remote DoQ client under multi-threaded...

OESA-2026-4197 coredns security update

CoreDNS is a fast and flexible DNS server. The key word here is flexible: with CoreDNS you are able to do what you want with your DNS data by utilizing plugins. Security Fixes: CoreDNS is a DNS server written in Go. Prior to 1.14.7, the DNS-over-HTTPS, DNS-over-HTTP/3, DNS-over-QUIC, and...

OESA-2026-4195 coredns security update

CoreDNS is a fast and flexible DNS server. The key word here is flexible: with CoreDNS you are able to do what you want with your DNS data by utilizing plugins. Security Fixes: CoreDNS is a DNS server written in Go. Prior to 1.14.7, the DNS-over-HTTPS, DNS-over-HTTP/3, DNS-over-QUIC, and...

OESA-2026-4196 coredns security update

CoreDNS is a fast and flexible DNS server. The key word here is flexible: with CoreDNS you are able to do what you want with your DNS data by utilizing plugins. Security Fixes: CoreDNS is a DNS server written in Go. Prior to 1.14.7, the DNS-over-HTTPS, DNS-over-HTTP/3, DNS-over-QUIC, and...

OESA-2026-4194 coredns security update

CoreDNS is a fast and flexible DNS server. The key word here is flexible: with CoreDNS you are able to do what you want with your DNS data by utilizing plugins. Security Fixes: CoreDNS is a DNS server written in Go. Prior to 1.14.7, the DNS-over-HTTPS, DNS-over-HTTP/3, DNS-over-QUIC, and...

SUSE CVE-2026-78227

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 '--with-libngtcp2'. Each DoQ stream owns an output buffer that holds the DNS response. ngtcp2's retransmission buffer keeps a shallow pointer into the output buffe...

MGASA-2026-0451 Updated unbound packages fixes security vulnerabilities

Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY Possible heap buffer overflow during DNSSEC canonicalization CNAME synthesis could lead to heap corruption Possible ZONEMD verification bypass window Use-after-free in DoQ stream output buffer on reset re-transmission...

Updated unbound packages fixes security vulnerabilities

Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY Possible heap buffer overflow during DNSSEC canonicalization CNAME synthesis could lead to heap corruption Possible ZONEMD verification bypass window Use-after-free in DoQ stream output buffer on reset re-transmission...

SUSE CVE-2026-82399

CoreDNS is a DNS server written in Go. Prior to 1.14.7, the DNS-over-HTTPS, DNS-over-HTTP/3, DNS-over-QUIC, and DNS-over-gRPC request paths in plugin/pkg/doh/doh.go, core/dnsserver/serverquic.go, and core/dnsserver/servergrpc.go call dns.Msg.Unpack on attacker-controlled DNS section counts before...

SUSE CVE-2026-86003

CoreDNS is a DNS server written in Go. Prior to 1.14.7, the DNS-over-HTTPS, DNS-over-HTTP/3, DNS-over-QUIC, and DNS-over-gRPC listeners in plugin/pkg/doh/doh.go, core/dnsserver/serverquic.go, and core/dnsserver/servergrpc.go call dns.Msg.Unpack without the dns.DefaultMsgAcceptFunc request policy...

CVE-2026-86003

CoreDNS is a DNS server written in Go. Prior to 1.14.7, the DNS-over-HTTPS, DNS-over-HTTP/3, DNS-over-QUIC, and DNS-over-gRPC listeners in plugin/pkg/doh/doh.go, core/dnsserver/serverquic.go, and core/dnsserver/servergrpc.go call dns.Msg.Unpack without the dns.DefaultMsgAcceptFunc request policy...