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Security 8.19.5 release notes #7079

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Security 8.19.5 release notes
natasha-moore-elastic Oct 2, 2025
152f04e
address feedback
natasha-moore-elastic Oct 6, 2025
1da4243
Merge branch '8.19' into rn-8.19.5
natasha-moore-elastic Oct 6, 2025
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1 change: 1 addition & 0 deletions docs/release-notes.asciidoc
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This section summarizes the changes in each release.

* <<release-notes-8.19.5, {elastic-sec} version 8.19.5>>
* <<release-notes-8.19.4, {elastic-sec} version 8.19.4>>
* <<release-notes-8.19.3, {elastic-sec} version 8.19.3>>
* <<release-notes-8.19.2, {elastic-sec} version 8.19.2>>
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34 changes: 34 additions & 0 deletions docs/release-notes/8.19.asciidoc
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[[release-notes-header-8.19.0]]
== 8.19

[discrete]
[[release-notes-8.19.5]]
=== 8.19.5

[discrete]
[[features-8.19.5]]
==== New features
* Adds an {elastic-defend} option to remediate orphaned state by attempting to start Elastic Agent service.

[discrete]
[[enhancements-8.19.5]]
==== Enhancements
* Improves reliability and accuracy of reporting of {elastic-endpoint}'s {es} connection.

[discrete]
[[bug-fixes-8.19.5]]
==== Fixes
* Removes `null` in confirmation dialog when bulk editing index patterns for rules ({kibana-pull}236572[#236572]).
* Fixes the URL passed to detection rule actions via the `{{context.results_link}}` placeholder ({kibana-pull}236067[#236067]).
* Fixes alert page filtering by checking for empty `dataView` ({kibana-pull}235144[#235144]).
* Fixes browser fields caching to use the `dataView` ID instead of the index pattern({kibana-pull}234381[#234381]).
* Adds support in {elastic-defend} for installing eBPF event probes on Linux endpoints when cgroup2 is mounted in a non-standard location or not mounted at all.
* Adds support in {elastic-defend} for installing eBPF probes on Linux endpoints when taskstats is compiled out of the kernel.
* Fixes a bug in {elastic-defend} where Linux network events could have source and destination bytes swapped.
* Removes `.process.thread.capabilities.permitted` and `.process.thread.capabilities.effective` from Linux network events in {elastic-defend}.
* Fixes a bug in {elastic-defend} where host isolation could auto-release incorrectly. Host isolation now only releases when {elastic-endpoint} becomes orphaned. Intermittent {elastic-agent} connectivity changes no longer alter the host isolation state.
* Fixes an issue where {elastic-defend} would incorrectly calculate throughput capacity when sending documents to output. This may have limited event throughput on extremely busy endpoints.
* Fixes an issue in {elastic-defend} installation logging where only the first character of install paths (usually 'C') would be logged.

[discrete]
[[release-notes-8.19.4]]
=== 8.19.4

[discrete]
[[features-8.19.4]]
==== New features
* Adds more {elastic-defend} Linux diagnostic process `ptrace` events.

[discrete]
[[bug-fixes-8.19.4]]
==== Fixes
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