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crypto/tls: crypto/tls: Incorrect certificate validation during TLS session resumption

🗓️ 17 Mar 2026 04:01:11Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 40 Views

In tls session resumption, mutating client or root authorities between handshakes can allow improper resumption, especially after config cloning or using config retrieval methods.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.10aarch64aardvark-dns2:1.10.1-2.module+el8.10.0+24081+a04d358aaardvark-dns-2:1.10.1-2.module+el8.10.0+24081+a04d358a.aarch64.rpm
Red Hat Enterprise Linux8.10ppc64leaardvark-dns2:1.10.1-2.module+el8.10.0+24081+a04d358aaardvark-dns-2:1.10.1-2.module+el8.10.0+24081+a04d358a.ppc64le.rpm
Red Hat Enterprise Linux8.10s390xaardvark-dns2:1.10.1-2.module+el8.10.0+24081+a04d358aaardvark-dns-2:1.10.1-2.module+el8.10.0+24081+a04d358a.s390x.rpm
Red Hat Enterprise Linux8.10x86_64aardvark-dns2:1.10.1-2.module+el8.10.0+24081+a04d358aaardvark-dns-2:1.10.1-2.module+el8.10.0+24081+a04d358a.x86_64.rpm
Red Hat Enterprise Linux8.10aarch64buildah2:1.33.14-3.module+el8.10.0+24081+a04d358abuildah-2:1.33.14-3.module+el8.10.0+24081+a04d358a.aarch64.rpm
Red Hat Enterprise Linux8.10ppc64lebuildah2:1.33.14-3.module+el8.10.0+24081+a04d358abuildah-2:1.33.14-3.module+el8.10.0+24081+a04d358a.ppc64le.rpm
Red Hat Enterprise Linux8.10s390xbuildah2:1.33.14-3.module+el8.10.0+24081+a04d358abuildah-2:1.33.14-3.module+el8.10.0+24081+a04d358a.s390x.rpm
Red Hat Enterprise Linux8.10x86_64buildah2:1.33.14-3.module+el8.10.0+24081+a04d358abuildah-2:1.33.14-3.module+el8.10.0+24081+a04d358a.x86_64.rpm
Red Hat Enterprise Linux8.10aarch64buildah-debuginfo2:1.33.14-3.module+el8.10.0+24081+a04d358abuildah-debuginfo-2:1.33.14-3.module+el8.10.0+24081+a04d358a.aarch64.rpm
Red Hat Enterprise Linux8.10ppc64lebuildah-debuginfo2:1.33.14-3.module+el8.10.0+24081+a04d358abuildah-debuginfo-2:1.33.14-3.module+el8.10.0+24081+a04d358a.ppc64le.rpm
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29 Sep 2026 17:18Current
6.8Medium risk
Vulners AI Score6.8
CVSS 3.19.1 - 10
EPSS0.00856
SSVC
CWE-295
tls session resumptionclient authorities mutationroot authorities mutationconfig clone mutation
40