USN-8942-1: .NET vulnerabilities

Published Oct 20, 2026
·
Updated

Multiple security issues were discovered in .NET and this update includes new upstream .NET versions to fix these issues.

.NET 8 has been updated to 8.0.32 in Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. .NET 10 has been updated to 10.0.13 in Ubuntu 24.04 LTS, Ubuntu 26.04 LTS and Ubuntu 26.10. .NET 11 has been updated to 11.0.0~rc2 in Ubuntu 26.10.

In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes.

Affected Software

95 affected componentsFixes available
Microsoft .NET
All of the following
ubuntu/aspnetcore-runtime-10.0<10.0.13-0ubuntu1~26.10.1
10.0.13-0ubuntu1~26.10.1
Ubuntu Ubuntu=26.10
All of the following
ubuntu/aspnetcore-runtime-11.0<11.0.0~rc2-0ubuntu1~26.10.1
11.0.0~rc2-0ubuntu1~26.10.1
Ubuntu Ubuntu=26.10
All of the following
ubuntu/dotnet-host-10.0<10.0.13-0ubuntu1~26.10.1
10.0.13-0ubuntu1~26.10.1
Ubuntu Ubuntu=26.10
All of the following
ubuntu/dotnet-host-11.0<11.0.0~rc2-0ubuntu1~26.10.1
11.0.0~rc2-0ubuntu1~26.10.1
Ubuntu Ubuntu=26.10
All of the following
ubuntu/dotnet-hostfxr-10.0<10.0.13-0ubuntu1~26.10.1
10.0.13-0ubuntu1~26.10.1
Ubuntu Ubuntu=26.10
All of the following
ubuntu/dotnet-hostfxr-11.0<11.0.0~rc2-0ubuntu1~26.10.1
11.0.0~rc2-0ubuntu1~26.10.1
Ubuntu Ubuntu=26.10
All of the following
ubuntu/dotnet-runtime-10.0<10.0.13-0ubuntu1~26.10.1
10.0.13-0ubuntu1~26.10.1
Ubuntu Ubuntu=26.10
All of the following
ubuntu/dotnet-runtime-11.0<11.0.0~rc2-0ubuntu1~26.10.1
11.0.0~rc2-0ubuntu1~26.10.1
Ubuntu Ubuntu=26.10
All of the following
ubuntu/dotnet-sdk-10.0<10.0.113-0ubuntu1~26.10.1
10.0.113-0ubuntu1~26.10.1
Ubuntu Ubuntu=26.10
All of the following
ubuntu/dotnet-sdk-11.0<11.0.100~rc2-0ubuntu1~26.10.1
11.0.100~rc2-0ubuntu1~26.10.1
Ubuntu Ubuntu=26.10
All of the following
ubuntu/dotnet-sdk-aot-10.0<10.0.113-0ubuntu1~26.10.1
10.0.113-0ubuntu1~26.10.1
Ubuntu Ubuntu=26.10
All of the following
ubuntu/dotnet-sdk-aot-11.0<11.0.100~rc2-0ubuntu1~26.10.1
11.0.100~rc2-0ubuntu1~26.10.1
Ubuntu Ubuntu=26.10
All of the following
ubuntu/dotnet-sdk-dbg-10.0<10.0.113-0ubuntu1~26.10.1
10.0.113-0ubuntu1~26.10.1
Ubuntu Ubuntu=26.10
All of the following
ubuntu/dotnet-sdk-dbg-11.0<11.0.100~rc2-0ubuntu1~26.10.1
11.0.100~rc2-0ubuntu1~26.10.1
Ubuntu Ubuntu=26.10
All of the following
ubuntu/dotnet10<10.0.113-10.0.13-0ubuntu1~26.10.1
10.0.113-10.0.13-0ubuntu1~26.10.1
Ubuntu Ubuntu=26.10
All of the following
ubuntu/dotnet11<11.0.100-11.0.0~rc2-0ubuntu1~26.10.1
11.0.100-11.0.0~rc2-0ubuntu1~26.10.1
Ubuntu Ubuntu=26.10
All of the following
ubuntu/aspnetcore-runtime-10.0<10.0.13-0ubuntu1~26.04.1
10.0.13-0ubuntu1~26.04.1
Ubuntu Ubuntu=26.04
All of the following
ubuntu/dotnet-host-10.0<10.0.13-0ubuntu1~26.04.1
10.0.13-0ubuntu1~26.04.1
Ubuntu Ubuntu=26.04
All of the following
ubuntu/dotnet-hostfxr-10.0<10.0.13-0ubuntu1~26.04.1
10.0.13-0ubuntu1~26.04.1
Ubuntu Ubuntu=26.04
All of the following
ubuntu/dotnet-runtime-10.0<10.0.13-0ubuntu1~26.04.1
10.0.13-0ubuntu1~26.04.1
Ubuntu Ubuntu=26.04
All of the following
ubuntu/dotnet-sdk-10.0<10.0.113-0ubuntu1~26.04.1
10.0.113-0ubuntu1~26.04.1
Ubuntu Ubuntu=26.04
All of the following
ubuntu/dotnet-sdk-aot-10.0<10.0.113-0ubuntu1~26.04.1
10.0.113-0ubuntu1~26.04.1
Ubuntu Ubuntu=26.04
All of the following
ubuntu/dotnet-sdk-dbg-10.0<10.0.113-0ubuntu1~26.04.1
10.0.113-0ubuntu1~26.04.1
Ubuntu Ubuntu=26.04
All of the following
ubuntu/dotnet10<10.0.113-10.0.13-0ubuntu1~26.04.1
10.0.113-10.0.13-0ubuntu1~26.04.1
Ubuntu Ubuntu=26.04
All of the following
ubuntu/aspnetcore-runtime-10.0<10.0.13-0ubuntu1~24.04.1
10.0.13-0ubuntu1~24.04.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/aspnetcore-runtime-8.0<8.0.32-0ubuntu1~24.04.1
8.0.32-0ubuntu1~24.04.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/dotnet-host-10.0<10.0.13-0ubuntu1~24.04.1
10.0.13-0ubuntu1~24.04.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/dotnet-host-8.0<8.0.32-0ubuntu1~24.04.1
8.0.32-0ubuntu1~24.04.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/dotnet-hostfxr-10.0<10.0.13-0ubuntu1~24.04.1
10.0.13-0ubuntu1~24.04.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/dotnet-hostfxr-8.0<8.0.32-0ubuntu1~24.04.1
8.0.32-0ubuntu1~24.04.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/dotnet-runtime-10.0<10.0.13-0ubuntu1~24.04.1
10.0.13-0ubuntu1~24.04.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/dotnet-runtime-8.0<8.0.32-0ubuntu1~24.04.1
8.0.32-0ubuntu1~24.04.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/dotnet-sdk-10.0<10.0.113-0ubuntu1~24.04.1
10.0.113-0ubuntu1~24.04.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/dotnet-sdk-8.0<8.0.132-0ubuntu1~24.04.1
8.0.132-0ubuntu1~24.04.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/dotnet-sdk-aot-10.0<10.0.113-0ubuntu1~24.04.1
10.0.113-0ubuntu1~24.04.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/dotnet-sdk-dbg-10.0<10.0.113-0ubuntu1~24.04.1
10.0.113-0ubuntu1~24.04.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/dotnet10<10.0.113-10.0.13-0ubuntu1~24.04.1
10.0.113-10.0.13-0ubuntu1~24.04.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/dotnet8<8.0.132-8.0.32-0ubuntu1~24.04.1
8.0.132-8.0.32-0ubuntu1~24.04.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/aspnetcore-runtime-8.0<8.0.32-0ubuntu1~22.04.1
8.0.32-0ubuntu1~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/dotnet-host-8.0<8.0.32-0ubuntu1~22.04.1
8.0.32-0ubuntu1~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/dotnet-hostfxr-8.0<8.0.32-0ubuntu1~22.04.1
8.0.32-0ubuntu1~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/dotnet-runtime-8.0<8.0.32-0ubuntu1~22.04.1
8.0.32-0ubuntu1~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/dotnet-sdk-8.0<8.0.132-0ubuntu1~22.04.1
8.0.132-0ubuntu1~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/dotnet8<8.0.132-8.0.32-0ubuntu1~22.04.1
8.0.132-8.0.32-0ubuntu1~22.04.1
Ubuntu Ubuntu=22.04
ubuntu/dotnet8<8.0.132-8.0.32-0ubuntu1~22.04.1
8.0.132-8.0.32-0ubuntu1~22.04.1
ubuntu/dotnet10<10.0.113-10.0.13-0ubuntu1~24.04.1
10.0.113-10.0.13-0ubuntu1~24.04.1
ubuntu/dotnet8<8.0.132-8.0.32-0ubuntu1~24.04.1
8.0.132-8.0.32-0ubuntu1~24.04.1
ubuntu/dotnet10<10.0.113-10.0.13-0ubuntu1~26.10.1
10.0.113-10.0.13-0ubuntu1~26.10.1
ubuntu/dotnet11<11.0.100-11.0.0~rc2-0ubuntu1~26.10.1
11.0.100-11.0.0~rc2-0ubuntu1~26.10.1
ubuntu/dotnet10<10.0.113-10.0.13-0ubuntu1~26.04.1
10.0.113-10.0.13-0ubuntu1~26.04.1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/aspnetcore-runtime-10.0 to a version that resolves this vulnerability.

    Fixed in 10.0.13-0ubuntu1~26.10.1
  2. Upgrade

    Upgrade ubuntu/aspnetcore-runtime-11.0 to a version that resolves this vulnerability.

    Fixed in 11.0.0~rc2-0ubuntu1~26.10.1
  3. Upgrade

    Upgrade ubuntu/dotnet-host-10.0 to a version that resolves this vulnerability.

    Fixed in 10.0.13-0ubuntu1~26.10.1
  4. Upgrade

    Upgrade ubuntu/dotnet-host-11.0 to a version that resolves this vulnerability.

    Fixed in 11.0.0~rc2-0ubuntu1~26.10.1
  5. Upgrade

    Upgrade ubuntu/dotnet-hostfxr-10.0 to a version that resolves this vulnerability.

    Fixed in 10.0.13-0ubuntu1~26.10.1
  6. Upgrade

    Upgrade ubuntu/dotnet-hostfxr-11.0 to a version that resolves this vulnerability.

    Fixed in 11.0.0~rc2-0ubuntu1~26.10.1
  7. Upgrade

    Upgrade ubuntu/dotnet-runtime-10.0 to a version that resolves this vulnerability.

    Fixed in 10.0.13-0ubuntu1~26.10.1
  8. Upgrade

    Upgrade ubuntu/dotnet-runtime-11.0 to a version that resolves this vulnerability.

    Fixed in 11.0.0~rc2-0ubuntu1~26.10.1
  9. Upgrade

    Upgrade ubuntu/dotnet-sdk-10.0 to a version that resolves this vulnerability.

    Fixed in 10.0.113-0ubuntu1~26.10.1
  10. Upgrade

    Upgrade ubuntu/dotnet-sdk-11.0 to a version that resolves this vulnerability.

    Fixed in 11.0.100~rc2-0ubuntu1~26.10.1
  11. Upgrade

    Upgrade ubuntu/dotnet-sdk-aot-10.0 to a version that resolves this vulnerability.

    Fixed in 10.0.113-0ubuntu1~26.10.1
  12. Upgrade

    Upgrade ubuntu/dotnet-sdk-aot-11.0 to a version that resolves this vulnerability.

    Fixed in 11.0.100~rc2-0ubuntu1~26.10.1
  13. Upgrade

    Upgrade ubuntu/dotnet-sdk-dbg-10.0 to a version that resolves this vulnerability.

    Fixed in 10.0.113-0ubuntu1~26.10.1
  14. Upgrade

    Upgrade ubuntu/dotnet-sdk-dbg-11.0 to a version that resolves this vulnerability.

    Fixed in 11.0.100~rc2-0ubuntu1~26.10.1
  15. Upgrade

    Upgrade ubuntu/dotnet10 to a version that resolves this vulnerability.

    Fixed in 10.0.113-10.0.13-0ubuntu1~26.10.1
  16. Upgrade

    Upgrade ubuntu/dotnet11 to a version that resolves this vulnerability.

    Fixed in 11.0.100-11.0.0~rc2-0ubuntu1~26.10.1
  17. Upgrade

    Upgrade ubuntu/aspnetcore-runtime-10.0 to a version that resolves this vulnerability.

    Fixed in 10.0.13-0ubuntu1~26.04.1
  18. Upgrade

    Upgrade ubuntu/dotnet-host-10.0 to a version that resolves this vulnerability.

    Fixed in 10.0.13-0ubuntu1~26.04.1
  19. Upgrade

    Upgrade ubuntu/dotnet-hostfxr-10.0 to a version that resolves this vulnerability.

    Fixed in 10.0.13-0ubuntu1~26.04.1
  20. Upgrade

    Upgrade ubuntu/dotnet-runtime-10.0 to a version that resolves this vulnerability.

    Fixed in 10.0.13-0ubuntu1~26.04.1
  21. Upgrade

    Upgrade ubuntu/dotnet-sdk-10.0 to a version that resolves this vulnerability.

    Fixed in 10.0.113-0ubuntu1~26.04.1
  22. Upgrade

    Upgrade ubuntu/dotnet-sdk-aot-10.0 to a version that resolves this vulnerability.

    Fixed in 10.0.113-0ubuntu1~26.04.1
  23. Upgrade

    Upgrade ubuntu/dotnet-sdk-dbg-10.0 to a version that resolves this vulnerability.

    Fixed in 10.0.113-0ubuntu1~26.04.1
  24. Upgrade

    Upgrade ubuntu/dotnet10 to a version that resolves this vulnerability.

    Fixed in 10.0.113-10.0.13-0ubuntu1~26.04.1
  25. Upgrade

    Upgrade ubuntu/aspnetcore-runtime-10.0 to a version that resolves this vulnerability.

    Fixed in 10.0.13-0ubuntu1~24.04.1
  26. Upgrade

    Upgrade ubuntu/aspnetcore-runtime-8.0 to a version that resolves this vulnerability.

    Fixed in 8.0.32-0ubuntu1~24.04.1
  27. Upgrade

    Upgrade ubuntu/dotnet-host-10.0 to a version that resolves this vulnerability.

    Fixed in 10.0.13-0ubuntu1~24.04.1
  28. Upgrade

    Upgrade ubuntu/dotnet-host-8.0 to a version that resolves this vulnerability.

    Fixed in 8.0.32-0ubuntu1~24.04.1
  29. Upgrade

    Upgrade ubuntu/dotnet-hostfxr-10.0 to a version that resolves this vulnerability.

    Fixed in 10.0.13-0ubuntu1~24.04.1
  30. Upgrade

    Upgrade ubuntu/dotnet-hostfxr-8.0 to a version that resolves this vulnerability.

    Fixed in 8.0.32-0ubuntu1~24.04.1
  31. Upgrade

    Upgrade ubuntu/dotnet-runtime-10.0 to a version that resolves this vulnerability.

    Fixed in 10.0.13-0ubuntu1~24.04.1
  32. Upgrade

    Upgrade ubuntu/dotnet-runtime-8.0 to a version that resolves this vulnerability.

    Fixed in 8.0.32-0ubuntu1~24.04.1
  33. Upgrade

    Upgrade ubuntu/dotnet-sdk-10.0 to a version that resolves this vulnerability.

    Fixed in 10.0.113-0ubuntu1~24.04.1
  34. Upgrade

    Upgrade ubuntu/dotnet-sdk-8.0 to a version that resolves this vulnerability.

    Fixed in 8.0.132-0ubuntu1~24.04.1
  35. Upgrade

    Upgrade ubuntu/dotnet-sdk-aot-10.0 to a version that resolves this vulnerability.

    Fixed in 10.0.113-0ubuntu1~24.04.1
  36. Upgrade

    Upgrade ubuntu/dotnet-sdk-dbg-10.0 to a version that resolves this vulnerability.

    Fixed in 10.0.113-0ubuntu1~24.04.1
  37. Upgrade

    Upgrade ubuntu/dotnet10 to a version that resolves this vulnerability.

    Fixed in 10.0.113-10.0.13-0ubuntu1~24.04.1
  38. Upgrade

    Upgrade ubuntu/dotnet8 to a version that resolves this vulnerability.

    Fixed in 8.0.132-8.0.32-0ubuntu1~24.04.1
  39. Upgrade

    Upgrade ubuntu/aspnetcore-runtime-8.0 to a version that resolves this vulnerability.

    Fixed in 8.0.32-0ubuntu1~22.04.1
  40. Upgrade

    Upgrade ubuntu/dotnet-host-8.0 to a version that resolves this vulnerability.

    Fixed in 8.0.32-0ubuntu1~22.04.1
  41. Upgrade

    Upgrade ubuntu/dotnet-hostfxr-8.0 to a version that resolves this vulnerability.

    Fixed in 8.0.32-0ubuntu1~22.04.1
  42. Upgrade

    Upgrade ubuntu/dotnet-runtime-8.0 to a version that resolves this vulnerability.

    Fixed in 8.0.32-0ubuntu1~22.04.1
  43. Upgrade

    Upgrade ubuntu/dotnet-sdk-8.0 to a version that resolves this vulnerability.

    Fixed in 8.0.132-0ubuntu1~22.04.1
  44. Upgrade

    Upgrade ubuntu/dotnet8 to a version that resolves this vulnerability.

    Fixed in 8.0.132-8.0.32-0ubuntu1~22.04.1
  45. Upgrade

    Upgrade .NET 10 to a version that resolves this vulnerability.

    Fixed in 10.0.13
  46. Upgrade

    Upgrade .NET 11 to a version that resolves this vulnerability.

    Fixed in 11.0.0~rc2
  47. Upgrade

    Upgrade .NET 8 to a version that resolves this vulnerability.

    Fixed in 8.0.32

Event History

Oct 20, 2026
Advisory Published
via Ubuntu·12:00 AM
Data Sourced
via Ubuntu·12:00 AM
DescriptionAffected Software
Advisory Published
via OSV·03:15 PM
Data Sourced
via OSV·03:15 PM
DescriptionAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

Company

Resources

Contact

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