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...

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...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the aresdnsnameparse function due to a lack of limits on the total pointer hops or assembled name length when processing DNS compression pointers. An attacker can cause excessive C...

SUSE-SU-2026:3456-1 Security update for perl-Net-DNS

This update for perl-Net-DNS fixes the following issue - CVE-2026-64194: RFC 1035 compression pointers are followed via recursion with no depth limit established, which can lead to DoS when specially crafted DNS packets are parsed bsc1272214...

SUSE-SU-2026:3431-1 Security update for perl-Net-DNS

This update for perl-Net-DNS fixes the following issue - CVE-2026-64194: RFC 1035 compression pointers are followed via recursion with no depth limit established, which can lead to DoS when specially crafted DNS packets are parsed bsc1272214...

OPENSUSE-SU-2026:21437-1 Security update for perl-Net-DNS

This update for perl-Net-DNS fixes the following issues: Changes in perl-Net-DNS: - CVE-2026-64194: Fixed a Denial of Service via deep DNS compression pointer chains bsc1272214 - CVE-2026-64193: Fixed a remote execution injection bsc1272212...

SUSE CVE-2026-64194

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 compression pointers by recursing into itself with no depth limit. It is possible to construct a name which saturates the call stack at least with...

CVE-2026-64194

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 compression pointers by recursing into itself with no depth limit. It is possible to construct a name which saturates the call stack at least with...

CVE-2026-64194 Net::DNS versions through 1.55 for Perl allow Denial of Service via deep DNS compression pointer chains

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 compression pointers by recursing into itself with no depth limit. It is possible to construct a name which saturates the call stack at least with...

CVE-2026-64194

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 compression pointers by recursing into itself with no depth limit. It is possible to construct a name which saturates the call stack at least with...

EUVD-2026-46052

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 compression pointers by recursing into itself with no depth limit. It is possible to construct a name which saturates the call stack at least with...

CVE-2026-64194

The Net::DNS Perl library (versions through 1.55 ) is vulnerable to a Denial of Service (DoS) attack due to deep DNS compression pointer chains. The root cause is that Net::DNS::DomainName::decode follows RFC 1035 compression pointers without a depth limit, allowing arbitrarily long backward chai...

CVE-2026-64194 Net::DNS versions through 1.55 for Perl allow Denial of Service via deep DNS compression pointer chains

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 compression pointers by recursing into itself with no depth limit. It is possible to construct a name which saturates the call stack at least with...

CVE-2026-64194: Uncontrolled Recursion

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 compression pointers by recursing into itself with no depth limit. It is possible to construct a name which saturates the call stack at least with...

PT-2026-61696

Name of the Vulnerable Software and Affected Versions Net::DNS versions prior to 1.56 Description An issue exists where the software allows a Denial of Service via deep DNS compression pointer chains. The Net::DNS::DomainName::decode function follows RFC 1035 compression pointers by recursing int...

CVE-2026-47180

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...

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...

Uncontrolled Recursion

Overview trapster is a Trapster Daemon Affected versions of this package are vulnerable to Uncontrolled Recursion through the decodelabels function. An attacker can cause the application to crash and disrupt service by sending specially crafted UDP packets containing malformed DNS compression...

GHSA-MXWC-WH95-PW4G Trapster Community: Unauthenticated malformed DNS compression pointers crash per-packet honeypot handler

Summary trapster.libs.dns.decodelabels decodes DNS names from attacker-supplied UDP packets and recurses once per RFC 1035 compression pointer with no cycle detection and no depth bound. A single unauthenticated UDP datagram sent to the DNS honeypot drives the function past CPython's recursion...

CVE-2026-42304

A flaw was found in Twisted, specifically within the twisted.names module. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted TCP DNS packet containing deeply chained compression pointers. This can lead to resource exhaustion, causing the...