[Bug 2115829] Re: [SRU] New upstream microrelease .NET 8.0.118/8.0.18

[Dominik Viererbe]

I opened LP: #2118896 to track the issue.

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Title:
  [SRU] New upstream microrelease .NET 8.0.118/8.0.18

Status in dotnet8 package in Ubuntu:
  Fix Released
Status in dotnet8 source package in Jammy:
  Fix Committed
Status in dotnet8 source package in Noble:
  Fix Released
Status in dotnet8 source package in Oracular:
  Won't Fix
Status in dotnet8 source package in Plucky:
  Fix Released
Status in dotnet8 source package in Questing:
  Fix Released

Bug description:
  This is the tracking bug for the .NET 8 July 2025 release.

  [Impact]

   * This correspond to an upstream microrelease (Microsoft Patch Tuesday microrelease) released on July 8th, 2025; see:
     - .NET blog entry: https://devblogs.microsoft.com/dotnet/dotnet-and-dotnet-framework-july-2025-servicing-updates/
     - .NET 8.0.18 Runtime release notes: https://github.com/dotnet/core/blob/main/release-notes/8.0/8.0.18/8.0.18.md
     - .NET 8.0.118 SDK release notes: https://github.com/dotnet/core/blob/main/release-notes/8.0/8.0.18/8.0.118.md
     - .NET 8.0.18 Runtime changes: https://github.com/dotnet/runtime/issues?q=milestone%3A8.0.18%20is%3Aclosed%20label%3Aservicing-approved
     - ASP.NET Core 8.0.18 Runtime changes: https://github.com/dotnet/aspnetcore/issues?q=milestone%3A8.0.18%20is%3Aclosed%20label%3Aservicing-approved

   * It is beneficial for our LTS users to have access to the latest
  .NET stack.

  [Test Case]

   * The package should build successfully in -proposed (respectively).

   * The packages should be installable on jammy, noble, oracular, plucky, questing on
     amd64, arm64, s390x and ppc64el architectures.

   * Autopackage tests should pass.

   * The usual manual tests that have been seen in the previous microreleases
     (see https://github.com/canonical/dotnet-source-build/blob/main/docs/SRUTestPlan.md).

     Note: The need for manual testing has been largely reduced, because the
           autopkgtests improvements far exceeds the coverage provided by the
           mentioned manual test plans.

  [Regression Potential]

   * The upstream testing routine is usually satisfactory (see for
  example Microsoft's public Azure Pipeline for .NET related
  repositories: https://dev.azure.com/dnceng-public/public/_build), but
  there is always a risk of something breaking.

  [Other]

  * 8.0.18 is the version number of the .NET Runtime and 8.0.118 is the version
    number of the .NET SDK. The package version only refers to the SDK version
    number.

  * We are only building the 8.0.1xx feature band, because this is the only
    feature band that allows building from source. See explanation of feature
    bands: https://learn.microsoft.com/en-us/dotnet/core/releases-and-support#feature-bands-sdk-only

  * Overview of how dotnet is versioned: https://learn.microsoft.com/en-
  us/dotnet/core/versions/

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