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dotnet: SocketsHttpHandler Http2Connection - HTTP/2 SETTINGS/PING ACK flood causing OOM

🗓️ 20 Jul 2026 18:31:50Reported by RedHatType 
redhat
 redhat
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dotnet SocketsHttpHandler HTTP/2 settings ping ack flood causes out of memory DoS on Unix.

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Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Hardened Imagesanyaarch64aspnetcore-runtime-8.08.0.29-2.1.hum1aspnetcore-runtime-8.0-8.0.29-2.1.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64aspnetcore-runtime-8.08.0.29-2.1.hum1aspnetcore-runtime-8.0-8.0.29-2.1.hum1.x86_64.rpm

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19 Aug 2026 20:44Current
5.2Medium risk
Vulners AI Score5.2
CVSS 3.17.5
EPSS0.0084
SSVC
10