AZL-98229 CVE-2026-80213 affecting package ruby for versions less than 3.3.5-9

An issue was discovered in the resolv gem before 0.7.2 for Ruby. Resolv::DNS::MessageEncoder wrote a DNS label's length into a single octet without checking its range. A label longer than 255 octets had its length stored modulo 256 but the label data was written unchanged, and thus the bytes on t...

CVE-2026-80213

An issue was discovered in the resolv gem before 0.7.2 for Ruby. Resolv::DNS::MessageEncoder wrote a DNS label's length into a single octet without checking its range. A label longer than 255 octets had its length stored modulo 256 but the label data was written unchanged, and thus the bytes on t...

CVE-2026-80212

An issue was discovered in the resolv gem before 0.7.2 for Ruby. Resolv::DNS::Resource.getclass, Resolv::DNS::Resource::Generic.create, and Resolv::DNS::SvcParam::Generic.create generate a new class for each unknown DNS resource record type, class pair, or each unknown SvcParamKey, encountered...

AZL-98232 CVE-2026-80212 affecting package ruby for versions less than 3.3.5-9

An issue was discovered in the resolv gem before 0.7.2 for Ruby. Resolv::DNS::Resource.getclass, Resolv::DNS::Resource::Generic.create, and Resolv::DNS::SvcParam::Generic.create generate a new class for each unknown DNS resource record type, class pair, or each unknown SvcParamKey, encountered...

CVE-2026-80213

An issue was discovered in the resolv gem before 0.7.2 for Ruby. Resolv::DNS::MessageEncoder wrote a DNS label's length into a single octet without checking its range. A label longer than 255 octets had its length stored modulo 256 but the label data was written unchanged, and thus the bytes on t...

CVE-2026-80213

CVE-2026-80213 affects the resolv gem (before 0.7.2 ) for Ruby. The vulnerability resides in Resolv::DNS::MessageEncoder , which wrote a DNS label's length into a single octet without range validation. Labels longer than 255 octets had their length stored modulo 256 while the label data was writt...

CVE-2026-80213

An issue was discovered in the resolv gem before 0.7.2 for Ruby. Resolv::DNS::MessageEncoder wrote a DNS label's length into a single octet without checking its range. A label longer than 255 octets had its length stored modulo 256 but the label data was written unchanged, and thus the bytes on t...

EUVD-2026-67139

An issue was discovered in the resolv gem before 0.7.2 for Ruby. Resolv::DNS::MessageEncoder wrote a DNS label's length into a single octet without checking its range. A label longer than 255 octets had its length stored modulo 256 but the label data was written unchanged, and thus the bytes on t...

CVE-2026-80213

An issue was discovered in the resolv gem before 0.7.2 for Ruby. Resolv::DNS::MessageEncoder wrote a DNS label's length into a single octet without checking its range. A label longer than 255 octets had its length stored modulo 256 but the label data was written unchanged, and thus the bytes on t...

EUVD-2026-67138

An issue was discovered in the resolv gem before 0.7.2 for Ruby. Resolv::DNS::Resource.getclass, Resolv::DNS::Resource::Generic.create, and Resolv::DNS::SvcParam::Generic.create generate a new class for each unknown DNS resource record type, class pair, or each unknown SvcParamKey, encountered...

CVE-2026-80212

An issue was discovered in the resolv gem before 0.7.2 for Ruby. Resolv::DNS::Resource.getclass, Resolv::DNS::Resource::Generic.create, and Resolv::DNS::SvcParam::Generic.create generate a new class for each unknown DNS resource record type, class pair, or each unknown SvcParamKey, encountered...

CVE-2026-80212

An issue was discovered in the resolv gem before 0.7.2 for Ruby. Resolv::DNS::Resource.getclass, Resolv::DNS::Resource::Generic.create, and Resolv::DNS::SvcParam::Generic.create generate a new class for each unknown DNS resource record type, class pair, or each unknown SvcParamKey, encountered...

CVE-2026-80212

CVE-2026-80212 is a memory exhaustion vulnerability in the resolv gem before 0.7.2 for Ruby. The root cause is that Resolv::DNS::Resource.get_class, Resolv::DNS::Resource::Generic.create, and Resolv::DNS::SvcParam::Generic.create permanently register a new class for every unknown DNS resource rec...

PT-2026-82435

resolv 0.7.2 and 0.3.2 are out, fixing CVE-2026-80212 memory exhaustion and CVE-2026-80213 hostname validation bypass. Only code that resolves names through the resolv gem is affected. Ordinary socket and Net::HTTP connections are not. https://t.co/DF8XaeW39C...

PT-2026-82434

resolv 0.7.2 and 0.3.2 are out, fixing CVE-2026-80212 memory exhaustion and CVE-2026-80213 hostname validation bypass. Only code that resolves names through the resolv gem is affected. Ordinary socket and Net::HTTP connections are not. https://t.co/DF8XaeW39C...

resolv: resolv gem: Denial of Service via uncontrolled memory growth from crafted DNS responses

A flaw was found in the resolv gem. An attacker controlling DNS responses e.g., a spoofed response or a malicious upstream DNS server can exploit this by sending crafted DNS responses containing many distinct unknown DNS resource record pairs or SvcParamKeys. This leads to uncontrolled memory...

resolv: Resolv gem: DNS allowlist and egress bypass, and cache poisoning via crafted hostnames

A flaw was found in the resolv gem. This vulnerability arises from the incorrect handling of DNS label lengths during message encoding. A remote attacker could exploit this by providing a specially crafted hostname to an application utilizing the resolv gem. This could lead to the bypass of...

resolv: Resolv gem: DNS allowlist and egress bypass, and cache poisoning via crafted hostnames

A flaw was found in the resolv gem. This vulnerability arises from the incorrect handling of DNS label lengths during message encoding. A remote attacker could exploit this by providing a specially crafted hostname to an application utilizing the resolv gem. This could lead to the bypass of...

resolv: resolv gem: Denial of Service via uncontrolled memory growth from crafted DNS responses

A flaw was found in the resolv gem. An attacker controlling DNS responses e.g., a spoofed response or a malicious upstream DNS server can exploit this by sending crafted DNS responses containing many distinct unknown DNS resource record pairs or SvcParamKeys. This leads to uncontrolled memory...

resolv: resolv gem: Denial of Service via uncontrolled memory growth from crafted DNS responses

A flaw was found in the resolv gem. An attacker controlling DNS responses e.g., a spoofed response or a malicious upstream DNS server can exploit this by sending crafted DNS responses containing many distinct unknown DNS resource record pairs or SvcParamKeys. This leads to uncontrolled memory...