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crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages

🗓️ 29 Jul 2026 22:49:53Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 16 Views

Go crypto/tls flaw enables TLS 1.3 DoS via key update messages in a record, causing deadlock.

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Red Hat Enterprise Linux9.2aarch64osbuild-composer76.1-6.el9_2osbuild-composer-76.1-6.el9_2.aarch64.rpm
Red Hat Enterprise Linux9.2ppc64leosbuild-composer76.1-6.el9_2osbuild-composer-76.1-6.el9_2.ppc64le.rpm
Red Hat Enterprise Linux9.2s390xosbuild-composer76.1-6.el9_2osbuild-composer-76.1-6.el9_2.s390x.rpm
Red Hat Enterprise Linux9.2x86_64osbuild-composer76.1-6.el9_2osbuild-composer-76.1-6.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2aarch64osbuild-composer-core76.1-6.el9_2osbuild-composer-core-76.1-6.el9_2.aarch64.rpm
Red Hat Enterprise Linux9.2ppc64leosbuild-composer-core76.1-6.el9_2osbuild-composer-core-76.1-6.el9_2.ppc64le.rpm
Red Hat Enterprise Linux9.2s390xosbuild-composer-core76.1-6.el9_2osbuild-composer-core-76.1-6.el9_2.s390x.rpm
Red Hat Enterprise Linux9.2x86_64osbuild-composer-core76.1-6.el9_2osbuild-composer-core-76.1-6.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2aarch64osbuild-composer-core-debuginfo76.1-6.el9_2osbuild-composer-core-debuginfo-76.1-6.el9_2.aarch64.rpm
Red Hat Enterprise Linux9.2ppc64leosbuild-composer-core-debuginfo76.1-6.el9_2osbuild-composer-core-debuginfo-76.1-6.el9_2.ppc64le.rpm
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10 Sep 2026 04:27Current
7High risk
Vulners AI Score7
CVSS 3.17.5
EPSS0.00621
SSVC
16