Cardano warns pool operators of critical Linux kernel flaw CVE-2026-98432 affecting 58% of ADA supply

On October 30, Cardano coordinating group Intersect warned pool operators about a critical Linux kernel vulnerability CVE-2026-98432, rated 9.8 in severity. The bug could crash servers or allow unauthorized control, affecting servers that produce Cardano blocks. Approximately 21.5 billion ADA, about 58% of the circulating supply, is staked on these pools. While no attacks have been reported and ADA cannot be stolen, disruptions could reduce block production and staking rewards. Patches are arriving unevenly across Linux distributions.