AZL-103307 CVE-2026-69184 affecting package c-ares 1.30.0-2

c-ares is an asynchronous resolver library. Prior to 1.34.7, aresdnsnameparse enforces backward DNS compression pointers but does not bound the total pointer hops or assembled name length. A malicious DNS server can send a response containing a long descending pointer chain and many resource...

CVE-2026-69184 c-ares: CPU-exhaustion denial of service via unbounded DNS name compression pointer chains

c-ares is an asynchronous resolver library. Prior to 1.34.7, aresdnsnameparse enforces backward DNS compression pointers but does not bound the total pointer hops or assembled name length. A malicious DNS server can send a response containing a long descending pointer chain and many resource...

openSUSE 16 Security Update : perl-Net-DNS (openSUSE-SU-2026:21859-1)

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21859-1 advisory. Changes in perl-Net-DNS: Updated to 1.570.0 1.57: See /usr/share/doc/packages/perl-Net-DNS/Changes . - Resync with IANA DNS parameters registry....

OPENSUSE-SU-2026:21859-1 Security update for perl-Net-DNS

This update for perl-Net-DNS fixes the following issues: Changes in perl-Net-DNS: Updated to 1.570.0 1.57: See /usr/share/doc/packages/perl-Net-DNS/Changes . - Resync with IANA DNS parameters registry. - EDNS: Add support for MQTYPE-QUERY option. - Unbounded recursion when re-encoding message wit...

Fedora 43 : perl-Net-DNS (2026-1237afef8a)

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-1237afef8a advisory. Update to Net-DNS 1.56 from 1.53. Security fixes: - CVE-worthy: Remote code injection via EDNS EXTENDED ERROR rt.cpan 179945 - Denial of Service via...

openSUSE 16 Security Update : c-ares (openSUSE-SU-2026:21721-1)

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21721-1 advisory. Updat to c-ares 1.36.8. - CVE-2026-33630: remotely triggerable use-after-free/double-free in query-completion handling via aresgetaddrinfo over...

Updated c-ares packages fix security vulnerabilities

Use-after-free / double-free in c-ares query-completion handling, remotely triggerable via aresgetaddrinfo over TCP. CVE-2026-33630 CPU-exhaustion denial of service via unbounded DNS name compression pointer chains. CVE-2026-69184 Memory-amplification denial of service via unvalidated DNS header...

SUSE-SU-2026:3872-1 Security update for libcares2

This update for libcares2 fixes the following issues: - CVE-2026-33630: Use-after-free / double-free in c-ares query-completion handling, remotely triggerable via aresgetaddrinfo over TCP bsc1270416. - CVE-2026-69184: CPU-exhaustion denial of service via unbounded DNS name compression pointer...

PT-2026-80175

Name of the Vulnerable Software and Affected Versions c-ares versions prior to 1.34.8-1.1 Description A CPU-exhaustion denial of service occurs due to unbounded DNS name compression pointer chains. This issue allows an attacker to cause excessive CPU usage by providing specially crafted DNS...

openSUSE 16 Security Update : perl-Net-DNS (openSUSE-SU-2026:21437-1)

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21437-1 advisory. Changes in perl-Net-DNS: - CVE-2026-64194: Fixed a Denial of Service via deep DNS compression pointer chains bsc1272214 - CVE-2026-64193: Fixed ...

Linux Distros Unpatched Vulnerability : CVE-2026-64194

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 Denial of Service via deep DNS compression pointer chains. Net::DNS::DomainName::decode follows RFC 1035 compressi...

CVE-2026-47180 Zeroconf: Unbounded recursion in DNS compression-pointer decoder allows LAN-local denial of service

Zeroconf is a pure Python implementation of multicast DNS service discovery. Prior to 0.149.5, DNSIncoming.decodelabelsatoffset recurses once per DNS-name compression pointer, and a single mDNS packet carrying chained pointers can trigger a RecursionError that escapes DNSIncoming.init, causing...

GHSA-9PGC-3CCV-5297 zeroconf has unbounded recursion in DNS compression-pointer decoder that allows LAN-local denial of service

Impact DNSIncoming.decodelabelsatoffset recurses once per DNS-name compression pointer RFC 1035 §4.1.4. Pointer cycles and label counts were capped, but the chain length of unique forward pointers was not. A single 3 kB mDNS packet carrying 1500 chained pointers drives the recursion past CPython'...

Important: python-twisted

Issue Overview: The twisted.names module is vulnerable to a Denial of Service DoS attack via resource exhaustion during DNS name decompression. A remote, unauthenticated attacker can exploit this by sending a crafted TCP DNS packet containing deeply chained compression pointers. This flaw bypasse...

OESA-2026-2367 python-twisted security update

Twisted is an event-based framework for internet applications, supporting Python 2.7 and Python 3.5+. It includes modules for many different purposes, including the following: Security Fixes: A denial of service vulnerability exists in Twisted framework when handling DNS compression pointer chain...

OESA-2026-2369 python-twisted security update

Twisted is an event-based framework for internet applications, supporting Python 2.7 and Python 3.5+. It includes modules for many different purposes, including the following: Security Fixes: A denial of service vulnerability exists in Twisted framework when handling DNS compression pointer chain...

OESA-2026-2368 python-twisted security update

Twisted is an event-based framework for internet applications, supporting Python 2.7 and Python 3.5+. It includes modules for many different purposes, including the following: Security Fixes: A denial of service vulnerability exists in Twisted framework when handling DNS compression pointer chain...

CVE-2026-42304

The CVE-2026-42304 issue affects Twisted (twisted.names) up to version 26.4.0rc2. Root cause: the DNS name decoder in twisted.names.dns.Name.decode lacks a limit on pointer dereferences per DNS message, and the per-question visited state can reset, enabling an attacker to craft TCP DNS packets wi...

Twisted has a Denial of Service (DoS) in twisted.names via Crafted DNS Compression Pointer Chains

Details The twisted.names module is vulnerable to a Denial of Service DoS attack via resource exhaustion during DNS name decompression. A remote, unauthenticated attacker can exploit this by sending a crafted TCP DNS packet containing deeply chained compression pointers. This flaw bypasses previo...

PT-2026-37262

Name of the Vulnerable Software and Affected Versions Twisted versions prior to 26.4.0 Description The twisted.names module is susceptible to a Denial of Service DoS attack caused by resource exhaustion during DNS name decompression. A remote, unauthenticated attacker can send a specially crafted...