Issued:
2026-08-24
Updated:
2026-08-24

RHSA-2026:58566 - Important: .NET 8.0 security, bug fix, and enhancement update

Synopsis

Important: .NET 8.0 security, bug fix, and enhancement update

Type/Severity

Security Advisory: Important

Topic

An update for .NET 8.0 is now available for Red Hat Enterprise Linux 10.0 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

.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: 8.0.130 Runtime version: 8.0.30

Security Fix(es):

  • dotnet: SocketsHttpHandler Http2Connection - HTTP/2 SETTINGS/PING ACK flood causing OOM (CVE-2026-50651)

  • dotnet: .NET Core: Denial of Service via type confusion (CVE-2026-57108)

  • ASP.NET Core: ASP.NET Core: Denial of Service via uncontrolled resource allocation (CVE-2026-56170)

  • ASP.NET Core: ASP.NET Core: Privilege Escalation via Incorrect Authentication Algorithm (CVE-2026-47300)

  • ASP.NET Core: ASP.NET Core: Privilege Elevation via Authentication Bypass (CVE-2026-47303)

  • dotnet: .NET Security Feature Bypass Vulnerability (CVE-2026-47304)

  • dotnet: .NET: Denial of Service vulnerability due to uncontrolled resource allocation (CVE-2026-47302)

  • dotnet: .NET Framework: Privilege escalation via code injection (CVE-2026-50650)

  • dotnet: .NET: Security feature bypass due to incorrect authorization (CVE-2026-50528)

  • dotnet: .NET: Local code execution via deserialization of untrusted data (CVE-2026-50649)

  • dotnet: .NET: Local tampering via improper link resolution (CVE-2026-50526)

  • dotnet: .NET Framework: Local Code Execution via Protection Mechanism Failure (CVE-2026-50646)

  • dotnet: .NET: Denial of Service due to uncontrolled resource allocation (CVE-2026-50525)

  • dotnet: .NET Framework: Denial of Service via network-based buffer overflow (CVE-2026-50527)

  • dotnet: .NET Framework: Remote Denial of Service due to uncontrolled resource allocation (CVE-2026-50648)

  • .NET: .NET: Network Spoofing Vulnerability (CVE-2026-50659)

  • dotnet: .NET Framework: Denial of Service via improper input validation (CVE-2026-50524)

  • .NET: .NET Core: .NET Security Feature Bypass Vulnerability (CVE-2026-62899)

  • .NET: .NET Information Disclosure Vulnerability (CVE-2026-62900)

  • .NET: .NET Denial of Service Vulnerability (CVE-2026-62901)

  • .NET: .NET Elevation of Privilege Vulnerability (CVE-2026-62909)

Bug Fix(es) and Enhancement(s):

  • dotnet8.0: Reduce time to detect hanging builds during .NET RPM builds (c10s) [rhel-10.0.z] (JIRA:RHEL-192323)

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for x86_64 - Extended Update Support10.0x86_64
Red Hat Enterprise Linux for x86_64 - 4 years of updates10.0x86_64
Red Hat Enterprise Linux for Power, little endian - Extended Update Support10.0ppc64le
Red Hat Enterprise Linux for Power, little endian - 4 years of support10.0ppc64le
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support10.0s390x
Red Hat Enterprise Linux for IBM z Systems - 4 years of updates10.0s390x
Red Hat Enterprise Linux for ARM 64 - Extended Update Support10.0aarch64
Red Hat Enterprise Linux for ARM 64 - 4 years of updates10.0aarch64
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support10.0x86_64
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support10.0ppc64le
Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support10.0s390x
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support10.0aarch64

Updated Packages

  • dotnet-runtime-dbg-8.0-8.0.30-1.el10_0.x86_64.rpm
  • aspnetcore-runtime-8.0-8.0.30-1.el10_0.x86_64.rpm
  • dotnet-templates-8.0-8.0.130-1.el10_0.aarch64.rpm
  • dotnet-runtime-8.0-8.0.30-1.el10_0.aarch64.rpm
  • dotnet-apphost-pack-8.0-8.0.30-1.el10_0.s390x.rpm
  • dotnet-apphost-pack-8.0-8.0.30-1.el10_0.aarch64.rpm
  • dotnet-apphost-pack-8.0-8.0.30-1.el10_0.x86_64.rpm
  • dotnet-hostfxr-8.0-debuginfo-8.0.30-1.el10_0.x86_64.rpm
  • dotnet-runtime-8.0-8.0.30-1.el10_0.x86_64.rpm
  • dotnet-sdk-8.0-source-built-artifacts-8.0.130-1.el10_0.x86_64.rpm
  • dotnet-runtime-8.0-8.0.30-1.el10_0.s390x.rpm
  • dotnet-targeting-pack-8.0-8.0.30-1.el10_0.aarch64.rpm
  • dotnet-hostfxr-8.0-debuginfo-8.0.30-1.el10_0.ppc64le.rpm
  • dotnet-sdk-8.0-source-built-artifacts-8.0.130-1.el10_0.aarch64.rpm
  • dotnet8.0-8.0.130-1.el10_0.src.rpm
  • dotnet8.0-debugsource-8.0.130-1.el10_0.ppc64le.rpm
  • dotnet-sdk-8.0-8.0.130-1.el10_0.x86_64.rpm
  • dotnet-apphost-pack-8.0-debuginfo-8.0.30-1.el10_0.x86_64.rpm
  • dotnet8.0-debugsource-8.0.130-1.el10_0.aarch64.rpm
  • dotnet8.0-debugsource-8.0.130-1.el10_0.s390x.rpm
  • dotnet-runtime-8.0-debuginfo-8.0.30-1.el10_0.x86_64.rpm
  • aspnetcore-targeting-pack-8.0-8.0.30-1.el10_0.ppc64le.rpm
  • dotnet-hostfxr-8.0-debuginfo-8.0.30-1.el10_0.aarch64.rpm
  • aspnetcore-runtime-dbg-8.0-8.0.30-1.el10_0.aarch64.rpm
  • aspnetcore-runtime-8.0-8.0.30-1.el10_0.s390x.rpm
  • dotnet-runtime-dbg-8.0-8.0.30-1.el10_0.s390x.rpm
  • dotnet8.0-debugsource-8.0.130-1.el10_0.x86_64.rpm
  • aspnetcore-runtime-dbg-8.0-8.0.30-1.el10_0.ppc64le.rpm
  • aspnetcore-runtime-8.0-8.0.30-1.el10_0.ppc64le.rpm
  • aspnetcore-targeting-pack-8.0-8.0.30-1.el10_0.x86_64.rpm
  • dotnet-runtime-8.0-8.0.30-1.el10_0.ppc64le.rpm
  • dotnet-runtime-dbg-8.0-8.0.30-1.el10_0.ppc64le.rpm
  • dotnet-sdk-8.0-8.0.130-1.el10_0.s390x.rpm
  • dotnet-runtime-8.0-debuginfo-8.0.30-1.el10_0.s390x.rpm
  • dotnet-runtime-8.0-debuginfo-8.0.30-1.el10_0.ppc64le.rpm
  • aspnetcore-runtime-dbg-8.0-8.0.30-1.el10_0.s390x.rpm
  • dotnet-templates-8.0-8.0.130-1.el10_0.ppc64le.rpm
  • dotnet-sdk-8.0-8.0.130-1.el10_0.aarch64.rpm
  • dotnet-sdk-8.0-source-built-artifacts-8.0.130-1.el10_0.ppc64le.rpm
  • dotnet-apphost-pack-8.0-debuginfo-8.0.30-1.el10_0.ppc64le.rpm
  • dotnet-templates-8.0-8.0.130-1.el10_0.x86_64.rpm
  • dotnet-runtime-8.0-debuginfo-8.0.30-1.el10_0.aarch64.rpm
  • dotnet-hostfxr-8.0-8.0.30-1.el10_0.s390x.rpm
  • aspnetcore-runtime-dbg-8.0-8.0.30-1.el10_0.x86_64.rpm
  • dotnet-sdk-8.0-debuginfo-8.0.130-1.el10_0.s390x.rpm
  • dotnet-hostfxr-8.0-8.0.30-1.el10_0.x86_64.rpm
  • aspnetcore-targeting-pack-8.0-8.0.30-1.el10_0.s390x.rpm
  • dotnet-targeting-pack-8.0-8.0.30-1.el10_0.x86_64.rpm
  • dotnet-sdk-dbg-8.0-8.0.130-1.el10_0.s390x.rpm
  • dotnet-apphost-pack-8.0-debuginfo-8.0.30-1.el10_0.s390x.rpm
  • dotnet-hostfxr-8.0-8.0.30-1.el10_0.aarch64.rpm
  • dotnet-sdk-8.0-debuginfo-8.0.130-1.el10_0.aarch64.rpm
  • dotnet-templates-8.0-8.0.130-1.el10_0.s390x.rpm
  • dotnet-sdk-8.0-8.0.130-1.el10_0.ppc64le.rpm
  • dotnet-apphost-pack-8.0-8.0.30-1.el10_0.ppc64le.rpm
  • dotnet-runtime-dbg-8.0-8.0.30-1.el10_0.aarch64.rpm
  • dotnet-hostfxr-8.0-debuginfo-8.0.30-1.el10_0.s390x.rpm
  • dotnet-apphost-pack-8.0-debuginfo-8.0.30-1.el10_0.aarch64.rpm
  • dotnet-sdk-8.0-debuginfo-8.0.130-1.el10_0.ppc64le.rpm
  • aspnetcore-runtime-8.0-8.0.30-1.el10_0.aarch64.rpm
  • dotnet-targeting-pack-8.0-8.0.30-1.el10_0.ppc64le.rpm
  • dotnet-targeting-pack-8.0-8.0.30-1.el10_0.s390x.rpm
  • dotnet-sdk-dbg-8.0-8.0.130-1.el10_0.x86_64.rpm
  • dotnet-sdk-8.0-debuginfo-8.0.130-1.el10_0.x86_64.rpm
  • aspnetcore-targeting-pack-8.0-8.0.30-1.el10_0.aarch64.rpm
  • dotnet-hostfxr-8.0-8.0.30-1.el10_0.ppc64le.rpm
  • dotnet-sdk-dbg-8.0-8.0.130-1.el10_0.aarch64.rpm
  • dotnet-sdk-dbg-8.0-8.0.130-1.el10_0.ppc64le.rpm
  • dotnet-sdk-8.0-source-built-artifacts-8.0.130-1.el10_0.s390x.rpm

Fixes

CVEs

References

Additional information