EAP 7 is unavailable after updating to java 1.8 u331 and java 11.0.15 due to org.xnio.channels.Channels NoClassDefFoundError

Issue

• After updating to JDK 1.8 update 331 on JBoss EAP 7.1.6 on Windows, the Admin Console is no longer shown. Applications are also not accessible.
• After we installed Oracle JDK 1.8 update 331 or JDK 11.0.15, we are unable to get into Admin Console.
• When using JDK 11.0.15 a FileNotFoundException is thrown when a user is logging into the management console. The management console is no longer available

INFO  [org.jboss.as] (Controller Boot Thread) WFLYSRV0051: Admin-Konsole horcht an http://127.0.0.1:9990
ERROR [io.undertow.request] (External Management Request Threads -- 1) UT005071: Undertow request failed HttpServerExchange{ GET /management}: java.io.IOError: java.io.FileNotFoundException: Invalid file path
        at org.jboss.xnio@3.8.6.Final-redhat-00001//org.xnio.channels.Channels$4.run(Channels.java:1103)
        at org.jboss.xnio@3.8.6.Final-redhat-00001//org.xnio.channels.Channels$4.run(Channels.java:1093)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at org.jboss.xnio@3.8.6.Final-redhat-00001//org.xnio.channels.Channels.<clinit>(Channels.java:1093)
        at io.undertow.core@2.2.16.Final-redhat-00001//io.undertow.io.UndertowOutputStream.write(UndertowOutputStream.java:232)
        at io.undertow.core@2.2.16.Final-redhat-00001//io.undertow.io.BlockingSenderImpl.writeBuffer(BlockingSenderImpl.java:245)
.. ..
.. ..
Caused by: java.io.FileNotFoundException: Invalid file path
        at java.base/java.io.FileOutputStream.<init>(FileOutputStream.java:231)
        at java.base/java.io.FileOutputStream.<init>(FileOutputStream.java:126)
        at org.jboss.xnio@3.8.6.Final-redhat-00001//org.xnio.channels.Channels$4.run(Channels.java:1098)
        ... 29 more

• EAP boots up with errors after updating to Java 1.8 u133

2022-04-20 10:41:17,188 ERROR [org.xnio.listener] (management I/O-2) XNIO001007: A channel event listener threw an exception: java.io.IOError: java.io.FileNotFoundException: Invalid file path
    at org.xnio.channels.Channels$4.run(Channels.java:998)
    at org.xnio.channels.Channels$4.run(Channels.java:988)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.xnio.channels.Channels.<clinit>(Channels.java:988)
    at org.jboss.remoting3.remote.ServerConnectionOpenListener$Initial.initialiseCapabilities(ServerConnectionOpenListener.java:158)
    at org.jboss.remoting3.remote.ServerConnectionOpenListener$Initial.sendCapabilities(ServerConnectionOpenListener.java:415)
    at org.jboss.remoting3.remote.ServerConnectionOpenListener$Initial.handleEvent(ServerConnectionOpenListener.java:238)
    at org.jboss.remoting3.remote.ServerConnectionOpenListener$Initial.handleEvent(ServerConnectionOpenListener.java:141)
    at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
    at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
    at io.undertow.protocols.ssl.SslConduit$SslReadReadyHandler.readReady(SslConduit.java:1175)
    at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:89)
    at org.xnio.nio.WorkerThread.run(WorkerThread.java:591)
Caused by: java.io.FileNotFoundException: Invalid file path
    at java.io.FileOutputStream.<init>(Unknown Source)
    at java.io.FileOutputStream.<init>(Unknown Source)
    at org.xnio.channels.Channels$4.run(Channels.java:993)
    ... 12 more

• When accessing our app, we see recurring NoClassDefFoundErrors for org.xnio.channels.Channels after an initial FileNotFoundException during its :

12:31:39,955 ERROR [io.undertow.request] (default task-1) UT005023: Exception handling request to /app: org.springframework.web.util.NestedServletException: Handler dispatch failed; nested exception is java.io.IOError: java.io.FileNotFoundException: Invalid file path
    ...
Caused by: java.io.IOError: java.io.FileNotFoundException: Invalid file path
    at org.xnio.channels.Channels$4.run(Channels.java:1103)
    at org.xnio.channels.Channels$4.run(Channels.java:1093)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.xnio.channels.Channels.<clinit>(Channels.java:1093)
    at io.undertow.servlet.spec.ServletOutputStreamImpl.flushInternal(ServletOutputStreamImpl.java:504)
    at io.undertow.servlet.spec.ServletOutputStreamImpl.flush(ServletOutputStreamImpl.java:478)
    ... 99 more
Caused by: java.io.FileNotFoundException: Invalid file path
    at java.io.FileOutputStream.<init>(FileOutputStream.java:206)
    at java.io.FileOutputStream.<init>(FileOutputStream.java:101)
    at org.xnio.channels.Channels$4.run(Channels.java:1098)
    ... 117 more
12:31:41,299 ERROR [io.undertow.request] (default task-1) UT005071: Undertow request failed HttpServerExchange{ GET /app}: java.lang.NoClassDefFoundError: Could not initialize class org.xnio.channels.Channels
    at io.undertow.servlet.spec.ServletOutputStreamImpl.close(ServletOutputStreamImpl.java:628)
    at io.undertow.servlet.spec.HttpServletResponseImpl.closeStreamAndWriter(HttpServletResponseImpl.java:498)
    at io.undertow.servlet.spec.HttpServletResponseImpl.responseDone(HttpServletResponseImpl.java:587)
    at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:334)