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

🗓️ 09 Jun 2026 11:18:01Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 47 Views

crypto/tls TLS 1.3 DoS via multiple key update messages that cause deadlock and exhaustion.

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Red Hat Enterprise Linux9x86_64automation-gateway-proxy2.6.14-3.el9apautomation-gateway-proxy-2.6.14-3.el9ap.x86_64.rpm
Red Hat Enterprise Linux9aarch64automation-gateway-proxy-debugsource2.6.14-3.el9apautomation-gateway-proxy-debugsource-2.6.14-3.el9ap.aarch64.rpm
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Red Hat Enterprise Linux9s390xautomation-gateway-proxy-debugsource2.6.14-3.el9apautomation-gateway-proxy-debugsource-2.6.14-3.el9ap.s390x.rpm
Red Hat Enterprise Linux9x86_64automation-gateway-proxy-debugsource2.6.14-3.el9apautomation-gateway-proxy-debugsource-2.6.14-3.el9ap.x86_64.rpm
Red Hat Enterprise Linux9aarch64automation-gateway-proxy-server2.6.14-3.el9apautomation-gateway-proxy-server-2.6.14-3.el9ap.aarch64.rpm
Red Hat Enterprise Linux9ppc64leautomation-gateway-proxy-server2.6.14-3.el9apautomation-gateway-proxy-server-2.6.14-3.el9ap.ppc64le.rpm
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12 Sep 2026 13:32Current
7.2High risk
Vulners AI Score7.2
CVSS 3.17.5
EPSS0.00621
SSVC
CWE-764
Go languageTransport Layer SecurityKey update messagesDenial of servicehandshake vulnerabilityremote attacker
47