EUVD-2026-25524
GHSA-q633-5j2j-rqx5
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Lifecycle Timeline
8DescriptionNVD
In the Linux kernel, the following vulnerability has been resolved:
rxrpc: Fix buffer overread in rxgk_do_verify_authenticator()
Fix rxgk_do_verify_authenticator() to check the buffer size before checking the nonce.
AnalysisAI
Buffer overread in Linux kernel's rxgk_do_verify_authenticator() function allows remote unauthenticated attackers to trigger information disclosure and high-availability denial of service through network-accessible RxGK authentication handling. The vulnerability stems from improper buffer size validation before nonce verification in the RxRPC subsystem. …
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RemediationAI
Within 24 hours: Identify Linux systems running kernel versions prior to 6.19.13, 6.18.23, or 7.0, particularly those using RxRPC with RxGK authentication; document inventory and business criticality. Within 7 days: Deploy vendor-released patches to affected systems (kernel upgrade to 6.19.13, 6.18.23, or 7.0 minimum). …
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