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...

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...

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...

[SECURITY] Fedora 43 Update: rust-hickory-resolver-0.26.2-1.fc43

Hickory-resolver is a safe and secure DNS stub resolver library intended to be a high-level library for DNS record resolution...

[SECURITY] Fedora 45 Update: rust-hickory-resolver-0.26.2-1.fc45

Hickory-resolver is a safe and secure DNS stub resolver library intended to be a high-level library for DNS record resolution...

Fedora 45 : rust-hickory-net / rust-hickory-proto / rust-hickory-resolver (2026-37e598af67)

The remote Fedora 45 host has packages installed that are affected by a vulnerability as referenced in the FEDORA-2026-37e598af67 advisory. Update hickory-dns crates to version 0.26.2. This includes fixes for a large number of security relevant bugs. Release notes:...

Fedora 43 : rust-hickory-net / rust-hickory-proto / rust-hickory-resolver (2026-e82315c1dc)

The remote Fedora 43 host has packages installed that are affected by a vulnerability as referenced in the FEDORA-2026-e82315c1dc advisory. Update hickory-dns crates to version 0.26.2. This includes fixes for a large number of security relevant bugs. Release notes:...

[SECURITY] Fedora 43 Update: perl-Net-DNS-1.56-1.fc43

Net::DNS is a collection of Perl modules that act as a Domain Name System DNS resolver. It allows the programmer to perform DNS queries that are beyond the capabilities of gethostbyname and gethostbyaddr. The programmer should be somewhat familiar with the format of a DNS packet and its various...

[SECURITY] Fedora 44 Update: perl-Net-DNS-1.56-1.fc44

Net::DNS is a collection of Perl modules that act as a Domain Name System DNS resolver. It allows the programmer to perform DNS queries that are beyond the capabilities of gethostbyname and gethostbyaddr. The programmer should be somewhat familiar with the format of a DNS packet and its various...

EulerOS 2.0 SP12 : bind (EulerOS-SA-2026-3249)

According to the versions of the bind packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : BIND servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to excessive memory consumption when receiving a...

DNS Resolver Configuration Reuse

io.projectreactor.netty, reactor-netty-core is vulnerable to DNS Resolver Configuration Reuse. The vulnerability is due to the incorrect reuse of a previously configured DNS resolver between clients with different DNS resolver configurations, which allows an attacker to potentially influence DNS...

AZL-99095 CVE-2026-33630 affecting package nodejs 24.18.1-1

c-ares is an asynchronous resolver library. From ver 1.32.3 until 1.34.7, a use-after-free / double-free in c-ares' query-completion handling. The same flaw — a query's callback being invoked while the query is still linked in the channel's internal lookup structures — is present at multiple poin...

retryabledns v1.0.116

Retryable dns resolver Based on miekg/dns and freely inspired by bogdanovich/dnsresolver. Features Supports both system default DNS resolvers and user-provided ones Retries DNS requests in case of I/O errors, timeouts, or network failures Allows arbitrary query types Resolution with random...

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...

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 ...