Cyber ·
Multipath TCP: Linux vulnerability and a TCP option overlooked since 2020
Machine-translated summary of an SANS ISC item on the Multipath TCP option, introduced in 2020 and defined in RFC 8684, which returned to attention after CVE-2026-98432 was disclosed in the Linux implementation.
This content, published on November 2, 2026 in the SANS ISC feed, covers a TCP option that is often ignored, introduced in 2020 and described in RFC 8684. According to the text, the option drew attention the previous week because of a new vulnerability in the Linux implementation, identified as CVE-2026-98432. The material is a short episode and the translation is automatic, so it does not provide further technical details such as affected versions, detailed impact or available fixes. For those points, consult the original text and the official advisories from the vendor or distribution you use. Rota Nacional is an AI inference platform and offers no capability to detect, fix or mitigate this flaw, and this bulletin does not claim otherwise. If you use AI to study or summarize this alert, do not paste host names, IP addresses, internal configurations or credentials into the conversation. The personal data barrier detects types such as CPF, CNPJ, e-mail, phone numbers and person names, but it does not replace manual review of infrastructure secrets.