CoreDNS' DoQ worker pool does not bound stream backlog

Summary CoreDNS' DNS-over-QUIC DoQ server can be driven into large goroutine and memory growth by a remote client that opens many QUIC streams and stalls after sending only 1 byte. Even with a small configured quic workerpoolsize ... , CoreDNS still spawns a goroutine per accepted stream workers ...

Allocation of Resources Without Limits or Throttling

Overview github.com/coredns/coredns/core/dnsserver is a package that implements all the interfaces from Caddy, so that CoreDNS can be a servertype plugin. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling through the DoQ server's handling of...

GHSA-2WPX-QPW2-G5H5 CoreDNS' DoQ worker pool does not bound stream backlog

Summary CoreDNS' DNS-over-QUIC DoQ server can be driven into large goroutine and memory growth by a remote client that opens many QUIC streams and stalls after sending only 1 byte. Even with a small configured quic workerpoolsize ... , CoreDNS still spawns a goroutine per accepted stream workers ...

[SECURITY] Fedora 43 Update: ngtcp2-1.22.1-1.fc43

"Call it TCP/2. One More Time." ngtcp2 project is an effort to implement RFC9000 QUIC protocol...

PT-2026-37094

Name of the Vulnerable Software and Affected Versions CoreDNS versions prior to 1.14.3 Description The DNS-over-QUIC DoQ server can be driven into unbounded goroutine and memory growth by an unauthenticated remote attacker. This occurs when a client opens numerous QUIC streams and sends only one...

JLSEC-2026-257 Issue summary: If an application using the SSL_CIPHER_find() function in a QUIC protocol client...

Issue summary: If an application using the SSLCIPHERfind function in a QUIC protocol client or server receives an unknown cipher suite from the peer, a NULL dereference occurs. Impact summary: A NULL pointer dereference leads to abnormal termination of the running process causing Denial of Servic...

SUSE CVE-2026-33254

An attacker can create a large number of concurrent DoQ or DoH3 connections, causing unlimited memory allocation in DNSdist and leading to a denial of service. DOQ and DoH3 are disabled by default...

EUVD-2026-24927

An attacker can create a large number of concurrent DoQ or DoH3 connections, causing unlimited memory allocation in DNSdist and leading to a denial of service. DOQ and DoH3 are disabled by default...

CVE-2026-33254

An attacker can create a large number of concurrent DoQ or DoH3 connections, causing unlimited memory allocation in DNSdist and leading to a denial of service. DOQ and DoH3 are disabled by default...

CVE-2026-33595

A client can trigger excessive memory allocation by generating a lot of errors responses over a single DoQ and DoH3 connection, as some resources were not properly released until the end of the connection...

CVE-2026-33254

An attacker can create a large number of concurrent DoQ or DoH3 connections, causing unlimited memory allocation in DNSdist and leading to a denial of service. DOQ and DoH3 are disabled by default...

UBUNTU-CVE-2026-33254

An attacker can create a large number of concurrent DoQ or DoH3 connections, causing unlimited memory allocation in DNSdist and leading to a denial of service. DOQ and DoH3 are disabled by default...

CVE-2026-33595 DoQ/DoH3 excessive memory allocation

A client can trigger excessive memory allocation by generating a lot of errors responses over a single DoQ and DoH3 connection, as some resources were not properly released until the end of the connection...

CVE-2026-33595

A client can trigger excessive memory allocation by generating a lot of errors responses over a single DoQ and DoH3 connection, as some resources were not properly released until the end of the connection...

CVE-2026-33595

The connected documents independently confirm CVE-2026-33595 affects PowerDNS DNSdist, describing a flaw where a client can trigger excessive memory allocation by generating many error responses over a single DoQ/DoH3 connection, with resources not released until connection end. This is the state...

CVE-2026-33595 DoQ/DoH3 excessive memory allocation

A client can trigger excessive memory allocation by generating a lot of errors responses over a single DoQ and DoH3 connection, as some resources were not properly released until the end of the connection...

CVE-2026-33595 DoQ/DoH3 excessive memory allocation

A client can trigger excessive memory allocation by generating a lot of errors responses over a single DoQ and DoH3 connection, as some resources were not properly released until the end of the connection...

CVE-2026-33254 Resource exhaustion via DoQ/DoH3 connections

An attacker can create a large number of concurrent DoQ or DoH3 connections, causing unlimited memory allocation in DNSdist and leading to a denial of service. DOQ and DoH3 are disabled by default...

CVE-2026-33254 Resource exhaustion via DoQ/DoH3 connections

An attacker can create a large number of concurrent DoQ or DoH3 connections, causing unlimited memory allocation in DNSdist and leading to a denial of service. DOQ and DoH3 are disabled by default...

CVE-2026-33254

An attacker can create a large number of concurrent DoQ or DoH3 connections, causing unlimited memory allocation in DNSdist and leading to a denial of service. DOQ and DoH3 are disabled by default...