ALAS2023-2026-2096

References: CVE-2026-62899  CVE-2026-62900  CVE-2026-62901  CVE-2026-62909 
FAQs regarding Amazon Linux ALAS/CVE Severity

Issue Overview:

Inconsistent interpretation of http requests ('http request/response smuggling') in .NET allows an unauthorized attacker to bypass a security feature over a network. (CVE-2026-62899)

Improper removal of sensitive information before storage or transfer in .NET allows an unauthorized attacker to disclose information over a network. (CVE-2026-62900)

Unchecked input for loop condition in .NET allows an unauthorized attacker to deny service over a network. (CVE-2026-62901)

Uncaught exception in .NET allows an authorized attacker to elevate privileges locally. (CVE-2026-62909)

Issue Correction:
Run dnf update dotnet9.0 --releasever 2023.12.20260831 or dnf update --advisory ALAS2023-2026-2096 --releasever 2023.12.20260831 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-templates-9.0-9.0.120-1.amzn2023.0.1.aarch64
    dotnet-host-debuginfo-9.0.19-1.amzn2023.0.1.aarch64
    dotnet-sdk-9.0-debuginfo-9.0.120-1.amzn2023.0.1.aarch64
    dotnet-9.0.120-1.amzn2023.0.1.aarch64
    dotnet-sdk-9.0-source-built-artifacts-9.0.120-1.amzn2023.0.1.aarch64
    aspnetcore-runtime-9.0-9.0.19-1.amzn2023.0.1.aarch64
    dotnet-hostfxr-9.0-9.0.19-1.amzn2023.0.1.aarch64
    dotnet-runtime-9.0-debuginfo-9.0.19-1.amzn2023.0.1.aarch64
    dotnet-sdk-aot-9.0-9.0.120-1.amzn2023.0.1.aarch64
    dotnet-sdk-aot-9.0-debuginfo-9.0.120-1.amzn2023.0.1.aarch64
    dotnet-targeting-pack-9.0-9.0.19-1.amzn2023.0.1.aarch64
    dotnet-apphost-pack-9.0-debuginfo-9.0.19-1.amzn2023.0.1.aarch64
    dotnet-host-9.0.19-1.amzn2023.0.1.aarch64
    dotnet-runtime-dbg-9.0-9.0.19-1.amzn2023.0.1.aarch64
    dotnet-runtime-9.0-9.0.19-1.amzn2023.0.1.aarch64
    dotnet-apphost-pack-9.0-9.0.19-1.amzn2023.0.1.aarch64
    dotnet-hostfxr-9.0-debuginfo-9.0.19-1.amzn2023.0.1.aarch64
    dotnet-sdk-dbg-9.0-9.0.120-1.amzn2023.0.1.aarch64
    aspnetcore-targeting-pack-9.0-9.0.19-1.amzn2023.0.1.aarch64
    netstandard-targeting-pack-2.1-9.0.120-1.amzn2023.0.1.aarch64
    aspnetcore-runtime-dbg-9.0-9.0.19-1.amzn2023.0.1.aarch64
    dotnet9.0-debugsource-9.0.120-1.amzn2023.0.1.aarch64
    dotnet-sdk-9.0-9.0.120-1.amzn2023.0.1.aarch64

src:
    dotnet9.0-9.0.120-1.amzn2023.0.1.src

x86_64:
    dotnet-sdk-9.0-source-built-artifacts-9.0.120-1.amzn2023.0.1.x86_64
    dotnet9.0-debugsource-9.0.120-1.amzn2023.0.1.x86_64
    dotnet-host-debuginfo-9.0.19-1.amzn2023.0.1.x86_64
    dotnet-targeting-pack-9.0-9.0.19-1.amzn2023.0.1.x86_64
    dotnet-9.0.120-1.amzn2023.0.1.x86_64
    dotnet-apphost-pack-9.0-debuginfo-9.0.19-1.amzn2023.0.1.x86_64
    dotnet-runtime-9.0-9.0.19-1.amzn2023.0.1.x86_64
    aspnetcore-runtime-9.0-9.0.19-1.amzn2023.0.1.x86_64
    dotnet-hostfxr-9.0-debuginfo-9.0.19-1.amzn2023.0.1.x86_64
    dotnet-runtime-dbg-9.0-9.0.19-1.amzn2023.0.1.x86_64
    dotnet-sdk-aot-9.0-debuginfo-9.0.120-1.amzn2023.0.1.x86_64
    dotnet-templates-9.0-9.0.120-1.amzn2023.0.1.x86_64
    netstandard-targeting-pack-2.1-9.0.120-1.amzn2023.0.1.x86_64
    dotnet-sdk-9.0-debuginfo-9.0.120-1.amzn2023.0.1.x86_64
    dotnet-runtime-9.0-debuginfo-9.0.19-1.amzn2023.0.1.x86_64
    aspnetcore-runtime-dbg-9.0-9.0.19-1.amzn2023.0.1.x86_64
    dotnet-host-9.0.19-1.amzn2023.0.1.x86_64
    dotnet-hostfxr-9.0-9.0.19-1.amzn2023.0.1.x86_64
    dotnet-sdk-dbg-9.0-9.0.120-1.amzn2023.0.1.x86_64
    dotnet-sdk-aot-9.0-9.0.120-1.amzn2023.0.1.x86_64
    aspnetcore-targeting-pack-9.0-9.0.19-1.amzn2023.0.1.x86_64
    dotnet-sdk-9.0-9.0.120-1.amzn2023.0.1.x86_64
    dotnet-apphost-pack-9.0-9.0.19-1.amzn2023.0.1.x86_64