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kernel: rxrpc: fix oversized RESPONSE authenticator length check

🗓️ 28 Jul 2026 07:42:02Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 4 Views

Inverted length check in Linux kernel rxrpc accepts oversized authenticators, causing DoS.

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Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux10.2aarch64kernel6.12.0-211.40.1.el10_2kernel-6.12.0-211.40.1.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2ppc64lekernel6.12.0-211.40.1.el10_2kernel-6.12.0-211.40.1.el10_2.ppc64le.rpm
Red Hat Enterprise Linux10.2s390xkernel6.12.0-211.40.1.el10_2kernel-6.12.0-211.40.1.el10_2.s390x.rpm
Red Hat Enterprise Linux10.2x86_64kernel6.12.0-211.40.1.el10_2kernel-6.12.0-211.40.1.el10_2.x86_64.rpm
Red Hat Enterprise Linux10.2aarch64kernel-64k6.12.0-211.40.1.el10_2kernel-64k-6.12.0-211.40.1.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2aarch64kernel-64k-core6.12.0-211.40.1.el10_2kernel-64k-core-6.12.0-211.40.1.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2aarch64kernel-64k-debug6.12.0-211.40.1.el10_2kernel-64k-debug-6.12.0-211.40.1.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2aarch64kernel-64k-debug-core6.12.0-211.40.1.el10_2kernel-64k-debug-core-6.12.0-211.40.1.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2aarch64kernel-64k-debug-debuginfo6.12.0-211.40.1.el10_2kernel-64k-debug-debuginfo-6.12.0-211.40.1.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2aarch64kernel-64k-debug-devel6.12.0-211.40.1.el10_2kernel-64k-debug-devel-6.12.0-211.40.1.el10_2.aarch64.rpm
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26 Aug 2026 13:29Current
7.4High risk
Vulners AI Score7.4
CVSS 3.17.5
EPSS0.00923
SSVC
4