Home / mailings [USN-8215-1] .NET vulnerability
Posted on 29 April 2026
Ubuntu Security==========================================================================Ubuntu Security Notice USN-8215-1
April 28, 2026
dotnet10 vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 25.10
- Ubuntu 24.04 LTS
Summary:
.NET could be made to crash or run programs as an administrator.
Software Description:
- dotnet10: .NET CLI tools and runtime
Details:
It was discovered that the Microsoft.AspNetCore.DataProtection library in
.NET did not properly verify cryptographic signatures under certain
conditions. A remote attacker could possibly use this issue to elevate
privileges.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 25.10
aspnetcore-runtime-10.0 10.0.7-0ubuntu1~25.10.1
dotnet-host-10.0 10.0.7-0ubuntu1~25.10.1
dotnet-hostfxr-10.0 10.0.7-0ubuntu1~25.10.1
dotnet-runtime-10.0 10.0.7-0ubuntu1~25.10.1
dotnet-sdk-10.0 10.0.107-0ubuntu1~25.10.1
dotnet-sdk-aot-10.0 10.0.107-0ubuntu1~25.10.1
dotnet10 10.0.107-10.0.7-0ubuntu1~25.10.1
Ubuntu 24.04 LTS
aspnetcore-runtime-10.0 10.0.7-0ubuntu1~24.04.1
dotnet-host-10.0 10.0.7-0ubuntu1~24.04.1
dotnet-hostfxr-10.0 10.0.7-0ubuntu1~24.04.1
dotnet-runtime-10.0 10.0.7-0ubuntu1~24.04.1
dotnet-sdk-10.0 10.0.107-0ubuntu1~24.04.1
dotnet-sdk-aot-10.0 10.0.107-0ubuntu1~24.04.1
dotnet10 10.0.107-10.0.7-0ubuntu1~24.04.1
After a standard system update, it is recommended to rotate the
DataProtection key ring.
References:
https://ubuntu.com/security/notices/USN-8215-1
CVE-2026-40372
Package Information:
https://launchpad.net/ubuntu/+source/dotnet10/10.0.107-10.0.7-0ubuntu1~25.10.1
https://launchpad.net/ubuntu/+source/dotnet10/10.0.107-10.0.7-0ubuntu1~24.04.1
--===============5937886063039316149==Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature
