RLSA-2026:8475

Synopsis

Important: .NET 9.0 security update

Description

.NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation.

New versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 9.0.116 and .NET Runtime 9.0.15.Security Fix(es):

* dotnet: .NET: Security Bypass and Denial of Service Vulnerability (CVE-2026-26171)

* dotnet: .NET: Denial of Service via stack overflow (CVE-2026-32203)

* dotnet: .NET: Denial of Service via Infinite Recursion in XmlDecryptionTransform (CVE-2026-33116)

* dotnet: Dotnet: SMTP Command Injection and Header Injection via MailAddress parsing flaw (CVE-2026-32178)

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 products

Rocky Linux 8 aarch64 Rocky Linux 8 x86_64

Fixes

2457739 2457740 2457741 2457781

CVEs

CVE-2026-26171 CVE-2026-32178 CVE-2026-32203 CVE-2026-33116

Affected packages

Rocky Linux 8 aarch64 - AppStream

aspnetcore-runtime-9.0-0:9.0.15-1.el8_10.aarch64.rpm aspnetcore-runtime-dbg-9.0-0:9.0.15-1.el8_10.aarch64.rpm aspnetcore-targeting-pack-9.0-0:9.0.15-1.el8_10.aarch64.rpm dotnet9.0-0:9.0.116-1.el8_10.src.rpm dotnet9.0-debuginfo-0:9.0.116-1.el8_10.aarch64.rpm dotnet9.0-debugsource-0:9.0.116-1.el8_10.aarch64.rpm dotnet-apphost-pack-9.0-0:9.0.15-1.el8_10.aarch64.rpm dotnet-apphost-pack-9.0-debuginfo-0:9.0.15-1.el8_10.aarch64.rpm dotnet-hostfxr-9.0-0:9.0.15-1.el8_10.aarch64.rpm dotnet-hostfxr-9.0-debuginfo-0:9.0.15-1.el8_10.aarch64.rpm dotnet-runtime-9.0-0:9.0.15-1.el8_10.aarch64.rpm dotnet-runtime-9.0-debuginfo-0:9.0.15-1.el8_10.aarch64.rpm dotnet-runtime-dbg-9.0-0:9.0.15-1.el8_10.aarch64.rpm dotnet-sdk-9.0-0:9.0.116-1.el8_10.aarch64.rpm dotnet-sdk-9.0-debuginfo-0:9.0.116-1.el8_10.aarch64.rpm dotnet-sdk-aot-9.0-0:9.0.116-1.el8_10.aarch64.rpm dotnet-sdk-aot-9.0-debuginfo-0:9.0.116-1.el8_10.aarch64.rpm dotnet-sdk-dbg-9.0-0:9.0.116-1.el8_10.aarch64.rpm dotnet-targeting-pack-9.0-0:9.0.15-1.el8_10.aarch64.rpm dotnet-templates-9.0-0:9.0.116-1.el8_10.aarch64.rpm netstandard-targeting-pack-2.1-0:9.0.116-1.el8_10.aarch64.rpm

Rocky Linux 8 x86_64 - AppStream

aspnetcore-runtime-9.0-0:9.0.15-1.el8_10.x86_64.rpm aspnetcore-runtime-dbg-9.0-0:9.0.15-1.el8_10.x86_64.rpm aspnetcore-targeting-pack-9.0-0:9.0.15-1.el8_10.x86_64.rpm dotnet9.0-0:9.0.116-1.el8_10.src.rpm dotnet9.0-debuginfo-0:9.0.116-1.el8_10.x86_64.rpm dotnet9.0-debugsource-0:9.0.116-1.el8_10.x86_64.rpm dotnet-apphost-pack-9.0-0:9.0.15-1.el8_10.x86_64.rpm dotnet-apphost-pack-9.0-debuginfo-0:9.0.15-1.el8_10.x86_64.rpm dotnet-hostfxr-9.0-0:9.0.15-1.el8_10.x86_64.rpm dotnet-hostfxr-9.0-debuginfo-0:9.0.15-1.el8_10.x86_64.rpm dotnet-runtime-9.0-0:9.0.15-1.el8_10.x86_64.rpm dotnet-runtime-9.0-debuginfo-0:9.0.15-1.el8_10.x86_64.rpm dotnet-runtime-dbg-9.0-0:9.0.15-1.el8_10.x86_64.rpm dotnet-sdk-9.0-0:9.0.116-1.el8_10.x86_64.rpm dotnet-sdk-9.0-debuginfo-0:9.0.116-1.el8_10.x86_64.rpm dotnet-sdk-aot-9.0-0:9.0.116-1.el8_10.x86_64.rpm dotnet-sdk-aot-9.0-debuginfo-0:9.0.116-1.el8_10.x86_64.rpm dotnet-sdk-dbg-9.0-0:9.0.116-1.el8_10.x86_64.rpm dotnet-targeting-pack-9.0-0:9.0.15-1.el8_10.x86_64.rpm dotnet-templates-9.0-0:9.0.116-1.el8_10.x86_64.rpm netstandard-targeting-pack-2.1-0:9.0.116-1.el8_10.x86_64.rpm

Rocky Linux 8 aarch64 - PowerTools

dotnet-sdk-9.0-source-built-artifacts-0:9.0.116-1.el8_10.aarch64.rpm

Rocky Linux 8 x86_64 - PowerTools

dotnet-sdk-9.0-source-built-artifacts-0:9.0.116-1.el8_10.x86_64.rpm