CVE-2026-56819

Range taken from the CVE record, check it before committing. make newentry in security/vuxml creates the vid.

  <vuln vid="FIXME (make newentry)">
    <topic>FIXME -- FIXME</topic>
    <affects>
      <package>
	<name>netty</name>
	<range><lt>4.1.136</lt></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>Netty is a network application framework for development of protocol
	servers and clients. In versions 4.2.0.Final through 4.2.15.Final and
	4.1.0.Final through 4.1.135.Final, a remote unauthenticated peer can
	leak one direct `ByteBuf` per HTTP/2 `DATA` frame in applications that
	enable HTTP/2 content decompression via
	`DelegatingDecompressorFrameListener`. When a `DATA` frame is
	processed for a stream whose decompressor has already been closed,
	`Http2Decompressor.decompress(...)` calls
	`decompressor.writeInbound(data.retain())` and does not release the
	retained buffer on the error path, eventually exhausting direct memory
	and crashing the JVM. This issue is fixed in versions 4.1.136.Final
	and 4.2.16.Final.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2026-56819</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2026-56819</url>
    </references>
    <dates>
      <discovery>2026-07-21</discovery>
      <entry>2026-10-25</entry>
    </dates>
  </vuln>