Intersect, the Cardano ecosystem organization, warns of a critical Linux kernel vulnerability with a risk score as high as 9.8

on November 1, according to the latest weekly report from Intersect, the Cardano ecosystem governance organization, a critical Linux kernel vulnerability identified as CVE-2026-98432 may affect multiple Linux distributions, including Ubuntu, carrying a CVSS risk score as high as 9.8 out of 10.

Intersect has warned Cardano stake pool operators (SPOs) to immediately check the Linux kernel versions used on their block production and relay nodes, and to update and restart their servers as soon as the respective distributions release security patches.

Currently, some Linux distributions have already provided patches, while others, including Ubuntu, are still preparing updates. Intersect stated that it will continue to publish security guidelines through its official X account and the stake pool operator community.