RLSA-2026:99051: Important: .NET 9.0 security, bug fix, and enhancement update

Published Nov 13, 2026
·
Updated

.NET is a fast, lightweight and modular platform for creating cross platform applications that work on Linux, macOS and Windows. It particularly focuses on creating console applications, web applications and micro-services. .NET contains a runtime conforming to .NET Standards a set of framework libraries, an SDK containing compilers and a 'dotnet' application to drive everything.

SDK version: 9.0.124 Runtime version: 9.0.23

Security Fix(es):

dotnet8.0: dotnet11.0: dotnet9.0: dotnet10.0: ASP.NET Core Information Disclosure Vulnerability (CVE-2026-109476)

dotnet11.0: dotnet10.0: dotnet9.0: dotnet8.0: .NET Elevation of Privilege Vulnerability (CVE-2026-105544)

dotnet8.0: dotnet9.0: dotnet11.0: dotnet10.0: .NET Denial of Service Vulnerability (CVE-2026-109475)

dotnet9.0: dotnet11.0: dotnet10.0: dotnet8.0: dotnet: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-114146)

dotnet11.0: dotnet8.0: dotnet9.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-114147)

dotnet11.0: dotnet8.0: dotnet9.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-114149)

Bug Fix(es) and Enhancement(s):

Update .NET 9.0 to SDK 9.0.124 and Runtime 9.0.23 (JIRA:Rocky Linux-302540)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Affected Software

21 affected componentsFixes available
rocky-linux/aspnetcore-runtime-9.0<0:9.0.23-1.el8_10
0:9.0.23-1.el8_10
rocky-linux/aspnetcore-runtime-dbg-9.0<0:9.0.23-1.el8_10
0:9.0.23-1.el8_10
rocky-linux/aspnetcore-targeting-pack-9.0<0:9.0.23-1.el8_10
0:9.0.23-1.el8_10
rocky-linux/dotnet9.0-debuginfo<0:9.0.124-1.el8_10
0:9.0.124-1.el8_10
rocky-linux/dotnet9.0-debugsource<0:9.0.124-1.el8_10
0:9.0.124-1.el8_10
rocky-linux/dotnet-apphost-pack-9.0<0:9.0.23-1.el8_10
0:9.0.23-1.el8_10
rocky-linux/dotnet-apphost-pack-9.0-debuginfo<0:9.0.23-1.el8_10
0:9.0.23-1.el8_10
rocky-linux/dotnet-hostfxr-9.0<0:9.0.23-1.el8_10
0:9.0.23-1.el8_10
rocky-linux/dotnet-hostfxr-9.0-debuginfo<0:9.0.23-1.el8_10
0:9.0.23-1.el8_10
rocky-linux/dotnet-runtime-9.0<0:9.0.23-1.el8_10
0:9.0.23-1.el8_10
rocky-linux/dotnet-runtime-9.0-debuginfo<0:9.0.23-1.el8_10
0:9.0.23-1.el8_10
rocky-linux/dotnet-runtime-dbg-9.0<0:9.0.23-1.el8_10
0:9.0.23-1.el8_10
rocky-linux/dotnet-sdk-9.0<0:9.0.124-1.el8_10
0:9.0.124-1.el8_10
rocky-linux/dotnet-sdk-9.0-debuginfo<0:9.0.124-1.el8_10
0:9.0.124-1.el8_10
rocky-linux/dotnet-sdk-9.0-source-built-artifacts<0:9.0.124-1.el8_10
0:9.0.124-1.el8_10
rocky-linux/dotnet-sdk-aot-9.0<0:9.0.124-1.el8_10
0:9.0.124-1.el8_10
rocky-linux/dotnet-sdk-aot-9.0-debuginfo<0:9.0.124-1.el8_10
0:9.0.124-1.el8_10
rocky-linux/dotnet-sdk-dbg-9.0<0:9.0.124-1.el8_10
0:9.0.124-1.el8_10
rocky-linux/dotnet-targeting-pack-9.0<0:9.0.23-1.el8_10
0:9.0.23-1.el8_10
rocky-linux/dotnet-templates-9.0<0:9.0.124-1.el8_10
0:9.0.124-1.el8_10
rocky-linux/netstandard-targeting-pack-2.1<0:9.0.124-1.el8_10
0:9.0.124-1.el8_10

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade rocky-linux/aspnetcore-runtime-9.0 to a version that resolves this vulnerability.

    Fixed in 0:9.0.23-1.el8_10
  2. Upgrade

    Upgrade rocky-linux/aspnetcore-runtime-dbg-9.0 to a version that resolves this vulnerability.

    Fixed in 0:9.0.23-1.el8_10
  3. Upgrade

    Upgrade rocky-linux/aspnetcore-targeting-pack-9.0 to a version that resolves this vulnerability.

    Fixed in 0:9.0.23-1.el8_10
  4. Upgrade

    Upgrade rocky-linux/dotnet9.0-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:9.0.124-1.el8_10
  5. Upgrade

    Upgrade rocky-linux/dotnet9.0-debugsource to a version that resolves this vulnerability.

    Fixed in 0:9.0.124-1.el8_10
  6. Upgrade

    Upgrade rocky-linux/dotnet-apphost-pack-9.0 to a version that resolves this vulnerability.

    Fixed in 0:9.0.23-1.el8_10
  7. Upgrade

    Upgrade rocky-linux/dotnet-apphost-pack-9.0-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:9.0.23-1.el8_10
  8. Upgrade

    Upgrade rocky-linux/dotnet-hostfxr-9.0 to a version that resolves this vulnerability.

    Fixed in 0:9.0.23-1.el8_10
  9. Upgrade

    Upgrade rocky-linux/dotnet-hostfxr-9.0-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:9.0.23-1.el8_10
  10. Upgrade

    Upgrade rocky-linux/dotnet-runtime-9.0 to a version that resolves this vulnerability.

    Fixed in 0:9.0.23-1.el8_10
  11. Upgrade

    Upgrade rocky-linux/dotnet-runtime-9.0-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:9.0.23-1.el8_10
  12. Upgrade

    Upgrade rocky-linux/dotnet-runtime-dbg-9.0 to a version that resolves this vulnerability.

    Fixed in 0:9.0.23-1.el8_10
  13. Upgrade

    Upgrade rocky-linux/dotnet-sdk-9.0 to a version that resolves this vulnerability.

    Fixed in 0:9.0.124-1.el8_10
  14. Upgrade

    Upgrade rocky-linux/dotnet-sdk-9.0-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:9.0.124-1.el8_10
  15. Upgrade

    Upgrade rocky-linux/dotnet-sdk-9.0-source-built-artifacts to a version that resolves this vulnerability.

    Fixed in 0:9.0.124-1.el8_10
  16. Upgrade

    Upgrade rocky-linux/dotnet-sdk-aot-9.0 to a version that resolves this vulnerability.

    Fixed in 0:9.0.124-1.el8_10
  17. Upgrade

    Upgrade rocky-linux/dotnet-sdk-aot-9.0-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:9.0.124-1.el8_10
  18. Upgrade

    Upgrade rocky-linux/dotnet-sdk-dbg-9.0 to a version that resolves this vulnerability.

    Fixed in 0:9.0.124-1.el8_10
  19. Upgrade

    Upgrade rocky-linux/dotnet-targeting-pack-9.0 to a version that resolves this vulnerability.

    Fixed in 0:9.0.23-1.el8_10
  20. Upgrade

    Upgrade rocky-linux/dotnet-templates-9.0 to a version that resolves this vulnerability.

    Fixed in 0:9.0.124-1.el8_10
  21. Upgrade

    Upgrade rocky-linux/netstandard-targeting-pack-2.1 to a version that resolves this vulnerability.

    Fixed in 0:9.0.124-1.el8_10
  22. Upgrade

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

    Fixed in 9.0.124
  23. Upgrade

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

    Fixed in 9.0.23

Event History

Nov 13, 2026
Advisory Published
via OSV·06:01 AM
Data Sourced
via OSV·06:01 AM
DescriptionSeverityAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

Which security issues in this update affect .NET 9.0?

The update addresses ASP.NET Core information disclosure, elevation of privilege, and denial-of-service vulnerabilities, as well as .NET elevation-of-privilege and denial-of-service vulnerabilities. The listed CVEs are CVE-2026-109476, CVE-2026-105544, CVE-2026-109475, CVE-2026-114146, CVE-2026-114147, and CVE-2026-114149.

2

What versions should be present after applying the update?

The update brings .NET 9.0 to SDK version 9.0.124 and Runtime version 9.0.23. Verify that the installed SDK and runtime versions match these values after updating.

Company

Resources

Contact

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