Security Bulletin: IBM Watson Discovery for IBM Cloud Pak for Data affected by vulnerability in netty-transport-native-epoll

Summary IBM Watson Discovery for IBM Cloud Pak for Data affected by vulnerability in netty-transport-native-epoll Vulnerability Details CVEID:CVE-2026-42577 DESCRIPTION: Netty is an asynchronous, event-driven network application framework. From 4.2.0.Final to 4.2.13.Final , Netty's epoll transpor...

CVE-2026-42577

Netty is an asynchronous, event-driven network application framework. From 4.2.0.Final to 4.2.13.Final , Netty's epoll transport fails to detect and close TCP connections that receive a RST after being half-closed, leading to stale channels that are never cleaned up and, in some code paths, a 100...

Netty epoll transport denial of service via RST on half-closed TCP connection

Summary Netty's epoll transport fails to detect and close TCP connections that receive a RST after being half-closed, leading to stale channels that are never cleaned up and, in some code paths, a 100% CPU busy-loop in the event loop thread. Affected versions All versions of 4.2.x...