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openssl: excessive memory use buffering DTLS records for a future epoch

🗓️ 14 Sep 2026 07:58:08Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 4 Views

DTLS record buffering for future epoch in OpenSSL during handshake causes memory exhaustion and DoS.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.8aarch64openssl1:3.5.8-1.el9_8openssl-1:3.5.8-1.el9_8.aarch64.rpm
Red Hat Enterprise Linux9.8ppc64leopenssl1:3.5.8-1.el9_8openssl-1:3.5.8-1.el9_8.ppc64le.rpm
Red Hat Enterprise Linux9.8s390xopenssl1:3.5.8-1.el9_8openssl-1:3.5.8-1.el9_8.s390x.rpm
Red Hat Enterprise Linux9.8x86_64openssl1:3.5.8-1.el9_8openssl-1:3.5.8-1.el9_8.x86_64.rpm
Red Hat Enterprise Linux9.8aarch64openssl-debuginfo1:3.5.8-1.el9_8openssl-debuginfo-1:3.5.8-1.el9_8.aarch64.rpm
Red Hat Enterprise Linux9.8i686openssl-debuginfo1:3.5.8-1.el9_8openssl-debuginfo-1:3.5.8-1.el9_8.i686.rpm
Red Hat Enterprise Linux9.8ppc64leopenssl-debuginfo1:3.5.8-1.el9_8openssl-debuginfo-1:3.5.8-1.el9_8.ppc64le.rpm
Red Hat Enterprise Linux9.8s390xopenssl-debuginfo1:3.5.8-1.el9_8openssl-debuginfo-1:3.5.8-1.el9_8.s390x.rpm
Red Hat Enterprise Linux9.8x86_64openssl-debuginfo1:3.5.8-1.el9_8openssl-debuginfo-1:3.5.8-1.el9_8.x86_64.rpm
Red Hat Enterprise Linux9.8aarch64openssl-debugsource1:3.5.8-1.el9_8openssl-debugsource-1:3.5.8-1.el9_8.aarch64.rpm
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14 Sep 2026 11:46Current
CVSS 3.17.5
EPSS0.00524
SSVC
4