net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME

A flaw was found in the net package of Go golang, specifically when using the LookupCNAME function with the cgo DNS resolver. A remote attacker could exploit this by providing a very long Canonical Name CNAME response. This can trigger a double-free of C memory, leading to a crash and a Denial of...

SUSE-SU-2026:3885-1 Security update for unbound

This update for unbound fixes the following issues: Update to version 1.25.2. Security issues fixed: - CVE-2026-40691: DoS due to heap overflow via single bad DNSCrypt query over TCP bsc1271875. - CVE-2026-42955: Ghost domain window can be extended by up to one cached TTL configured value for...

net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME

A flaw was found in the net package of Go golang, specifically when using the LookupCNAME function with the cgo DNS resolver. A remote attacker could exploit this by providing a very long Canonical Name CNAME response. This can trigger a double-free of C memory, leading to a crash and a Denial of...

Improperly Controlled Sequential Memory Allocation

Overview resolv is a Thread-aware DNS resolver library in Ruby. Affected versions of this package are vulnerable to Improperly Controlled Sequential Memory Allocation due to permanent class registration in Resolv::DNS::Resource::Generic.create, Resolv::DNS::SvcParam::Generic.create, and the relat...

CVE-2026-47843

In specific scenarios involving multiple clients with different DNS resolver configurations, Reactor Netty may incorrectly reuse a previously configured DNS resolver. Reactor Netty 1.3.0 - 1.3.6 Reactor Netty 1.1.0 - 1.2.18 Reactor Netty 1.0.52 and earlier...

CVE-2026-47843 Reactor Netty may incorrectly route traffic due to DNS resolver reuse

In specific scenarios involving multiple clients with different DNS resolver configurations, Reactor Netty may incorrectly reuse a previously configured DNS resolver. Reactor Netty 1.3.0 - 1.3.6 Reactor Netty 1.1.0 - 1.2.18 Reactor Netty 1.0.52 and earlier...

EUVD-2026-66678

In specific scenarios involving multiple clients with different DNS resolver configurations, Reactor Netty may incorrectly reuse a previously configured DNS resolver. Reactor Netty 1.3.0 - 1.3.6 Reactor Netty 1.1.0 - 1.2.18 Reactor Netty 1.0.52 and earlier...

CVE-2026-47843

CVE-2026-47843 affects Reactor Netty (versions 1.3.0–1.3.6, 1.1.0–1.2.18, and 1.0.52 and earlier). In specific scenarios involving multiple clients with different DNS resolver configurations, Reactor Netty may incorrectly reuse a previously configured DNS resolver, potentially causing traffic to ...

CVE-2026-47843 Reactor Netty may incorrectly route traffic due to DNS resolver reuse

In specific scenarios involving multiple clients with different DNS resolver configurations, Reactor Netty may incorrectly reuse a previously configured DNS resolver. Reactor Netty 1.3.0 - 1.3.6 Reactor Netty 1.1.0 - 1.2.18 Reactor Netty 1.0.52 and earlier...

PT-2026-82247

Name of the Vulnerable Software and Affected Versions Reactor Netty versions 1.3.0 through 1.3.6 Reactor Netty versions 1.1.0 through 1.2.18 Reactor Netty versions 1.0.52 and earlier Description In specific scenarios involving multiple clients with different DNS resolver configurations, the...

CVE-2026-47843: Undefined Security Weakness

In specific scenarios involving multiple clients with different DNS resolver configurations, Reactor Netty may incorrectly reuse a previously configured DNS resolver. Reactor Netty 1.3.0 - 1.3.6 Reactor Netty 1.1.0 - 1.2.18 Reactor Netty 1.0.52 and earlier...

CVE-2026-39155

A flaw was found in Knot DNS. The mod-onlinesign component incorrectly computes the next NSEC Next Secure owner name. This can lead to an overly broad authenticated denial interval, allowing DNS Domain Name System resolvers that use aggressive negative caching to incorrectly generate negative...

net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME

A flaw was found in the net package of Go golang, specifically when using the LookupCNAME function with the cgo DNS resolver. A remote attacker could exploit this by providing a very long Canonical Name CNAME response. This can trigger a double-free of C memory, leading to a crash and a Denial of...

cve-2026-47843 - LOW - Reactor Netty may incorrectly route traffic due to DNS resolver reuse

cve-2026-47843 - LOW - Reactor Netty may incorrectly route traffic due to DNS resolver reuse...

Use of Incorrectly-Resolved Name or Reference

Overview Affected versions of this package are vulnerable to Use of Incorrectly-Resolved Name or Reference in the process of handling DNS resolution when multiple clients with different DNS resolver configurations are dynamically created. An attacker can cause traffic to be routed to unintended...

bind: bind9: Cache poisoning via label count discrepancy, RRSIG, wildcards

It is possible for an attacker's zone to respond to a query with an RRSIG that has a smaller number of labels than the zone in which the RRSIG is contained. This causes named to produce a wildcard name for a zone that is shorter than the attacker's zone, which can result in cache poisoning. For...

net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME

A flaw was found in the net package of Go golang, specifically when using the LookupCNAME function with the cgo DNS resolver. A remote attacker could exploit this by providing a very long Canonical Name CNAME response. This can trigger a double-free of C memory, leading to a crash and a Denial of...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: bind (UTSA-2026-103694)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-103694 advisory. A DNSSEC validating resolver that is under a random subdomain attack against a DNSSEC-signed zone can suffer from runaway memory usage. The attacker needs to be able...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: bind (UTSA-2026-102687)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-102687 advisory. A DNSSEC validating resolver that is under a random subdomain attack against a DNSSEC-signed zone can suffer from runaway memory usage. The attacker needs to be able...

RLSA-2026:55892 Important: unbound security update

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Unbound: Cache poisoning via insufficient RRSIG.Labels validation and premature cache writes CVE-2026-44690 unbound: Unbound: Denial of Service via malformed EDNS Report-Channel opti...