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

🗓️ 06 Jul 2026 03:20:26Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 9 Views

Go net.LookupCNAME with cgo resolver can crash from long CNAME response, causing denial of service.

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Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux10.2aarch64ipp-usb0.9.27-7.el10_2.2ipp-usb-0.9.27-7.el10_2.2.aarch64.rpm
Red Hat Enterprise Linux10.2ppc64leipp-usb0.9.27-7.el10_2.2ipp-usb-0.9.27-7.el10_2.2.ppc64le.rpm
Red Hat Enterprise Linux10.2s390xipp-usb0.9.27-7.el10_2.2ipp-usb-0.9.27-7.el10_2.2.s390x.rpm
Red Hat Enterprise Linux10.2x86_64ipp-usb0.9.27-7.el10_2.2ipp-usb-0.9.27-7.el10_2.2.x86_64.rpm

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24 Jul 2026 14:45Current
7.1High risk
Vulners AI Score7.1
CVSS 3.17.5
EPSS0.00813
SSVC
9