Add known issue for sublogger memory leak (#23977) (#24008)

* add known issue for sublogger memory leak

* update known issue

* Update website/content/partials/known-issues/ephemeral-loggers-memory-leak.mdx



* Update website/content/partials/known-issues/ephemeral-loggers-memory-leak.mdx



* Update website/content/partials/known-issues/ephemeral-loggers-memory-leak.mdx



---------

Co-authored-by: davidadeleon <56207066+davidadeleon@users.noreply.github.com>
Co-authored-by: Hamid Ghaf <83242695+hghaf099@users.noreply.github.com>
Co-authored-by: Jason O'Donnell <2160810+jasonodonnell@users.noreply.github.com>
Co-authored-by: Brian Kassouf <briankassouf@users.noreply.github.com>

website/content/docs/release-notes/1.13.0.mdx

@@ -122,6 +122,8 @@ The fix for this UI issue is coming in the Vault 1.13.1 release.
 
 @include 'known-issues/internal-error-namespace-missing-policy.mdx'
 
+@include 'known-issues/ephemeral-loggers-memory-leak.mdx'
+
 ## Feature deprecations and EOL
 
 Please refer to the [Deprecation Plans and Notice](/vault/docs/deprecation) page

website/content/docs/release-notes/1.14.0.mdx

@@ -13,7 +13,7 @@ description: |-
 
 ## Known issues and breaking changes
 
-Version | Issue 
+Version | Issue
 ------- | ------------------------------------------------------------
 1.14.0+ | [Users limited by control groups can only access issuer detail from PKI overview page](/vault/docs/upgrading/upgrade-to-1.14.x#ui-pki-control-groups)
 All     | [API calls to update-primary may lead to data loss](/vault/docs/upgrading/upgrade-to-1.14.x#update-primary-data-loss)
@@ -83,7 +83,7 @@ Follow the learn more links for more information, or browse the list of
     </tr>
   </thead>
   <tbody>
-  
+
   <tr>
     <td rowspan={2} style={{verticalAlign: 'middle'}}>
       Public Key Infrastructure (PKI)
@@ -105,7 +105,7 @@ Follow the learn more links for more information, or browse the list of
       Use the improved PKI web UI to manage your PKI instance with intuitive
       configuration and reasonable defaults for workflows, metadata, issuer
       info, mount and tidy configuration, cross signing, multi-issuers etc.and
-      includes.   
+      includes.
       <br /><br />
       Learn more:&nbsp;
       <a href="/vault/api-docs/secret/pki#acme-certificate-issuance">PKI Secrets Engine</a>
@@ -241,14 +241,14 @@ Follow the learn more links for more information, or browse the list of
     </tr>
   </thead>
   <tbody>
-  
+
   <tr>
     <td style={{verticalAlign: 'middle'}}>
       Vault replication
     </td>
     <td style={{verticalAlign: 'middle', textAlign: 'center'}}>ENHANCED</td>
     <td style={{verticalAlign: 'middle'}}>
-      Stability improvements based on customer feedback for Vault 1.13. See the 
+      Stability improvements based on customer feedback for Vault 1.13. See the
       <a href="https://raw.githubusercontent.com/hashicorp/vault/main/CHANGELOG.md">
         Vault changelog
       </a>
@@ -278,6 +278,8 @@ Follow the learn more links for more information, or browse the list of
 
 @include 'known-issues/internal-error-namespace-missing-policy.mdx'
 
+@include 'known-issues/ephemeral-loggers-memory-leak.mdx'
+
 ## Feature deprecations and EOL
 
 Deprecated in 1.14 | Retired in 1.14

website/content/docs/upgrading/upgrade-to-1.13.x.mdx

@@ -184,3 +184,5 @@ Affects Vault 1.13.0+
 @include 'known-issues/transit-managed-keys-panics.mdx'
 
 @include 'known-issues/internal-error-namespace-missing-policy.mdx'
+
+@include 'known-issues/ephemeral-loggers-memory-leak.mdx'

website/content/docs/upgrading/upgrade-to-1.14.x.mdx

@@ -52,3 +52,5 @@ is measuring cumulative time writing, and not the distribution of individual wri
 @include 'known-issues/transit-managed-keys-sign-fails.mdx'
 
 @include 'known-issues/internal-error-namespace-missing-policy.mdx'
+
+@include 'known-issues/ephemeral-loggers-memory-leak.mdx'

website/content/partials/known-issues/ephemeral-loggers-memory-leak.mdx

@@ -0,0 +1,14 @@
+### Vault is storing references to ephemeral sub-loggers leading to a memory leak
+
+Vault is unexpectedly storing references to ephemeral sub-loggers which prevents them from being cleaned up, leading to
+a memory leak. This impacts many areas of Vault, but primarily logins in Enterprise.
+There is no workaround.
+
+#### Affected versions
+
+This issue affects Vault Community and Enterprise versions:
+- 1.13.7+
+- 1.14.3+
+- 1.15.0+
+
+A fix will be issued in the next release