UBUNTU-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...

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...

ai.new-wave:spring-agent-app (>=0.1.0 <=0.3.0), ai.new-wave:spring-agent-core (>=0.1.0 <=0.3.0) +1703 more potentially affected by CVE-2026-42577 via io.netty:netty-transport-classes-epoll (>=4.2.0.Alpha1 <=4.2.12.Final)

io.netty:netty-transport-classes-epoll MAVEN version =4.2.0.Alpha1, =0.1.0, =0.1.0, =0.1.0-M41, =0.1.0-M41, =0.1.0-M41, =0.1.0-M41, =0.4.0, =0.4.0, =9.0.1, =0.0.5, =0.0.1-alfa, =0.0.1-demo, =2.0.6 and more Source cves: CVE-2026-42577 Source advisory: SNYK:JAVA-IONETTY-16438936...

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...

PT-2026-38280

Name of the Vulnerable Software and Affected Versions Netty versions 4.2.0.Final through 4.2.12.Final Description Netty's epoll transport fails to detect and close TCP connections that receive a RST after being half-closed. This occurs when a connection has ALLOW HALF CLOSURE enabled or is in a...