========================================================================== Ubuntu Security Notice USN-7427-1 April 08, 2025
dotnet8, dotnet9 vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 24.10 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: .NET could be made to crash or run programs if it received specially crafted network traffic. Software Description: - dotnet8: .NET CLI tools and runtime - dotnet9: .NET CLI tools and runtime Details: James Newton-King discovered that .NET did not properly limit resource allocation when handling certain HTTP/3 requests. An attacker could possibly use this issue to cause a denial of service. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 24.10 aspnetcore-runtime-8.0 8.0.15-0ubuntu1~24.10.1 aspnetcore-runtime-9.0 9.0.4-0ubuntu1~24.10.1 dotnet-host-8.0 8.0.15-0ubuntu1~24.10.1 dotnet-host-9.0 9.0.4-0ubuntu1~24.10.1 dotnet-hostfxr-8.0 8.0.15-0ubuntu1~24.10.1 dotnet-hostfxr-9.0 9.0.4-0ubuntu1~24.10.1 dotnet-runtime-8.0 8.0.15-0ubuntu1~24.10.1 dotnet-runtime-9.0 9.0.4-0ubuntu1~24.10.1 dotnet-sdk-8.0 8.0.115-0ubuntu1~24.10.1 dotnet-sdk-9.0 9.0.105-0ubuntu1~24.10.1 dotnet-sdk-aot-9.0 9.0.105-0ubuntu1~24.10.1 dotnet8 8.0.115-8.0.15-0ubuntu1~24.10.1 dotnet9 9.0.105-9.0.4-0ubuntu1~24.10.1 Ubuntu 24.04 LTS aspnetcore-runtime-8.0 8.0.15-0ubuntu1~24.04.1 dotnet-host-8.0 8.0.15-0ubuntu1~24.04.1 dotnet-hostfxr-8.0 8.0.15-0ubuntu1~24.04.1 dotnet-runtime-8.0 8.0.15-0ubuntu1~24.04.1 dotnet-sdk-8.0 8.0.115-0ubuntu1~24.04.1 dotnet8 8.0.115-8.0.15-0ubuntu1~24.04.1 Ubuntu 22.04 LTS aspnetcore-runtime-8.0 8.0.15-0ubuntu1~22.04.1 dotnet-host-8.0 8.0.15-0ubuntu1~22.04.1 dotnet-hostfxr-8.0 8.0.15-0ubuntu1~22.04.1 dotnet-runtime-8.0 8.0.15-0ubuntu1~22.04.1 dotnet-sdk-8.0 8.0.115-0ubuntu1~22.04.1 dotnet8 8.0.115-8.0.15-0ubuntu1~22.04.1 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-7427-1 CVE-2025-26682 Package Information: https://launchpad.net/ubuntu/+source/dotnet8/8.0.115-8.0.15-0ubuntu1~24.10.1 https://launchpad.net/ubuntu/+source/dotnet9/9.0.105-9.0.4-0ubuntu1~24.10.1 https://launchpad.net/ubuntu/+source/dotnet8/8.0.115-8.0.15-0ubuntu1~24.04.1 https://launchpad.net/ubuntu/+source/dotnet8/8.0.115-8.0.15-0ubuntu1~22.04.1
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