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

🗓️ 20 Jul 2026 04:53:39Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 2 Views

.NET DoS in SocketsHttpHandler Http2Connection via HTTP/2 SETTINGS and PING ACK flood causing OOM.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux10.2aarch64aspnetcore-runtime-9.09.0.18-1.el10_2aspnetcore-runtime-9.0-9.0.18-1.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2ppc64leaspnetcore-runtime-9.09.0.18-1.el10_2aspnetcore-runtime-9.0-9.0.18-1.el10_2.ppc64le.rpm
Red Hat Enterprise Linux10.2s390xaspnetcore-runtime-9.09.0.18-1.el10_2aspnetcore-runtime-9.0-9.0.18-1.el10_2.s390x.rpm
Red Hat Enterprise Linux10.2x86_64aspnetcore-runtime-9.09.0.18-1.el10_2aspnetcore-runtime-9.0-9.0.18-1.el10_2.x86_64.rpm
Red Hat Enterprise Linux10.2aarch64aspnetcore-runtime-dbg-9.09.0.18-1.el10_2aspnetcore-runtime-dbg-9.0-9.0.18-1.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2ppc64leaspnetcore-runtime-dbg-9.09.0.18-1.el10_2aspnetcore-runtime-dbg-9.0-9.0.18-1.el10_2.ppc64le.rpm
Red Hat Enterprise Linux10.2s390xaspnetcore-runtime-dbg-9.09.0.18-1.el10_2aspnetcore-runtime-dbg-9.0-9.0.18-1.el10_2.s390x.rpm
Red Hat Enterprise Linux10.2x86_64aspnetcore-runtime-dbg-9.09.0.18-1.el10_2aspnetcore-runtime-dbg-9.0-9.0.18-1.el10_2.x86_64.rpm
Red Hat Enterprise Linux10.2aarch64aspnetcore-targeting-pack-9.09.0.18-1.el10_2aspnetcore-targeting-pack-9.0-9.0.18-1.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2ppc64leaspnetcore-targeting-pack-9.09.0.18-1.el10_2aspnetcore-targeting-pack-9.0-9.0.18-1.el10_2.ppc64le.rpm
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23 Jul 2026 03:46Current
5.2Medium risk
Vulners AI Score5.2
CVSS 3.17.5
EPSS0.00617
SSVC
2