adds endpoint release notes

Author: nastasha-solomon

docs/release-notes/8.19.asciidoc

@@ -2,13 +2,16 @@
 == 8.19
 
 [discrete]
-[[release-notes-8.19.2]]
-=== 8.19.2
+[[enhancements-8.19.2]]
+==== Enhancements
+* Makes {elastic-defend} malware scan queue operate more efficiently by not blocking scan requests when an oplock for the file being scanned cannot be acquired.
+* To help identify which parts of `elastic-endpoint.exe` are using a significant amount of CPU, {elastic-defend} on Windows can now include CPU profiling data in diagnostics. To request CPU profiling data via the command line, refer to the {ref}/elastic-agent-cmd-options.html#_options[Agent command reference]. To request CPU profiling data via Kibana, check the **Collect additional CPU metrics** box when requesting {agent} diagnostics.
 
 [discrete]
 [[bug-fixes-8.19.2]]
-==== Bug fixes and enhancements
-There are no user-facing changes in the 8.19.2 release.
+==== Fixes
+* Fixes a race condition in {elastic-defend} that may occasionally result in corrupted process command lines on Windows.  When this occurs, `process.command_line`, `process.args_count` and `process.args` may be incorrect, leading to false positives.
+* Fixes a bug where Linux endpoint network events would fail to load if IPV6 is not supported by the system.
 
 [discrete]
 [[release-notes-8.19.1]]