ALAS2023-2026-1628

References: CVE-2026-26171  CVE-2026-32178  CVE-2026-32203  CVE-2026-33116 
FAQs regarding Amazon Linux ALAS/CVE Severity

Issue Overview:

Uncontrolled resource consumption in .NET allows an unauthorized attacker to deny service over a network. (CVE-2026-26171)

Improper neutralization of special elements in .NET allows an unauthorized attacker to perform spoofing over a network. (CVE-2026-32178)

Stack-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to deny service over a network. (CVE-2026-32203)

Loop with unreachable exit condition ('infinite loop') in .NET, .NET Framework, Visual Studio allows an unauthorized attacker to deny service over a network. (CVE-2026-33116)

Issue Correction:
Run dnf update dotnet9.0 --releasever 2023.11.20260427 or dnf update --advisory ALAS2023-2026-1628 --releasever 2023.11.20260427 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation

New Packages:

aarch64:
    dotnet-sdk-9.0-source-built-artifacts-9.0.116-1.amzn2023.0.1.aarch64
    dotnet-hostfxr-9.0-debuginfo-9.0.15-1.amzn2023.0.1.aarch64
    dotnet-9.0.116-1.amzn2023.0.1.aarch64
    dotnet-templates-9.0-9.0.116-1.amzn2023.0.1.aarch64
    dotnet-sdk-9.0-debuginfo-9.0.116-1.amzn2023.0.1.aarch64
    aspnetcore-runtime-dbg-9.0-9.0.15-1.amzn2023.0.1.aarch64
    dotnet-sdk-dbg-9.0-9.0.116-1.amzn2023.0.1.aarch64
    dotnet-host-debuginfo-9.0.15-1.amzn2023.0.1.aarch64
    aspnetcore-targeting-pack-9.0-9.0.15-1.amzn2023.0.1.aarch64
    dotnet-runtime-9.0-debuginfo-9.0.15-1.amzn2023.0.1.aarch64
    dotnet-sdk-aot-9.0-9.0.116-1.amzn2023.0.1.aarch64
    dotnet-runtime-9.0-9.0.15-1.amzn2023.0.1.aarch64
    dotnet-apphost-pack-9.0-debuginfo-9.0.15-1.amzn2023.0.1.aarch64
    aspnetcore-runtime-9.0-9.0.15-1.amzn2023.0.1.aarch64
    dotnet-hostfxr-9.0-9.0.15-1.amzn2023.0.1.aarch64
    dotnet-runtime-dbg-9.0-9.0.15-1.amzn2023.0.1.aarch64
    netstandard-targeting-pack-2.1-9.0.116-1.amzn2023.0.1.aarch64
    dotnet-sdk-aot-9.0-debuginfo-9.0.116-1.amzn2023.0.1.aarch64
    dotnet-targeting-pack-9.0-9.0.15-1.amzn2023.0.1.aarch64
    dotnet9.0-debugsource-9.0.116-1.amzn2023.0.1.aarch64
    dotnet-apphost-pack-9.0-9.0.15-1.amzn2023.0.1.aarch64
    dotnet-host-9.0.15-1.amzn2023.0.1.aarch64
    dotnet-sdk-9.0-9.0.116-1.amzn2023.0.1.aarch64

src:
    dotnet9.0-9.0.116-1.amzn2023.0.1.src

x86_64:
    dotnet-host-debuginfo-9.0.15-1.amzn2023.0.1.x86_64
    dotnet-sdk-9.0-source-built-artifacts-9.0.116-1.amzn2023.0.1.x86_64
    dotnet-hostfxr-9.0-debuginfo-9.0.15-1.amzn2023.0.1.x86_64
    aspnetcore-targeting-pack-9.0-9.0.15-1.amzn2023.0.1.x86_64
    aspnetcore-runtime-dbg-9.0-9.0.15-1.amzn2023.0.1.x86_64
    aspnetcore-runtime-9.0-9.0.15-1.amzn2023.0.1.x86_64
    dotnet-targeting-pack-9.0-9.0.15-1.amzn2023.0.1.x86_64
    dotnet-apphost-pack-9.0-9.0.15-1.amzn2023.0.1.x86_64
    netstandard-targeting-pack-2.1-9.0.116-1.amzn2023.0.1.x86_64
    dotnet-hostfxr-9.0-9.0.15-1.amzn2023.0.1.x86_64
    dotnet-templates-9.0-9.0.116-1.amzn2023.0.1.x86_64
    dotnet9.0-debugsource-9.0.116-1.amzn2023.0.1.x86_64
    dotnet-sdk-dbg-9.0-9.0.116-1.amzn2023.0.1.x86_64
    dotnet-apphost-pack-9.0-debuginfo-9.0.15-1.amzn2023.0.1.x86_64
    dotnet-runtime-dbg-9.0-9.0.15-1.amzn2023.0.1.x86_64
    dotnet-runtime-9.0-debuginfo-9.0.15-1.amzn2023.0.1.x86_64
    dotnet-sdk-9.0-debuginfo-9.0.116-1.amzn2023.0.1.x86_64
    dotnet-sdk-aot-9.0-debuginfo-9.0.116-1.amzn2023.0.1.x86_64
    dotnet-host-9.0.15-1.amzn2023.0.1.x86_64
    dotnet-9.0.116-1.amzn2023.0.1.x86_64
    dotnet-runtime-9.0-9.0.15-1.amzn2023.0.1.x86_64
    dotnet-sdk-aot-9.0-9.0.116-1.amzn2023.0.1.x86_64
    dotnet-sdk-9.0-9.0.116-1.amzn2023.0.1.x86_64