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

🗓️ 01 Jul 2026 18:46:15Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 18 Views

Go net LookupCNAME with resolver may crash on long canonical name responses, causing a denial of service.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux10.2aarch64opentelemetry-collector0.152.1-1.el10_2opentelemetry-collector-0.152.1-1.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2ppc64leopentelemetry-collector0.152.1-1.el10_2opentelemetry-collector-0.152.1-1.el10_2.ppc64le.rpm
Red Hat Enterprise Linux10.2s390xopentelemetry-collector0.152.1-1.el10_2opentelemetry-collector-0.152.1-1.el10_2.s390x.rpm
Red Hat Enterprise Linux10.2x86_64opentelemetry-collector0.152.1-1.el10_2opentelemetry-collector-0.152.1-1.el10_2.x86_64.rpm

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09 Sep 2026 12:21Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.17.5
EPSS0.00813
SSVC
18