CVE-2026-121994

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Users should only connect GDB to trusted debug targets.\n\n--- CME Mitigation Guidance (2026-11-06) ---\nDisclaimer: The following mitigation solutions are provided as a courtesy, pending the application of an official patch. This content was generated utilizing AI tools in conjunction with data from https://cmetaxonomy.org. Customers are advised to independently evaluate and test these temporary mitigations within their own infrastructure.\n\nThe highest-value action is to enforce bounds checking against register size when decoding remote serial protocol register replies in the GDB client remote protocol handler: upgrade to the corresponding fixed Red Hat builds, which bounds RSP register reply decoding to the allocated register size rather than terminating only on NUL bytes, closing all 2 injection vectors (oversized RSP register reply, truncated RSP register reply stack disclosure). 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