A .NET 6 security update has been released for Ubuntu Linux 22.04 LTS.

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Ubuntu Security Notice USN-5609-1
September 13, 2022

dotnet6 vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS

Summary:

.NET 6 could be made to crash if it parsed a specially crafted file.

Software Description:
- dotnet6: dotNET CLI tools and runtime

Details:

Graham Esau discovered that .NET 6 incorrectly parsed certain payloads
during model binding. 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 22.04 LTS:
aspnetcore-runtime-6.0 6.0.109-0ubuntu1~22.04.1
dotnet-host 6.0.109-0ubuntu1~22.04.1
dotnet-hostfxr-6.0 6.0.109-0ubuntu1~22.04.1
dotnet-runtime-6.0 6.0.109-0ubuntu1~22.04.1
dotnet-sdk-6.0 6.0.109-0ubuntu1~22.04.1
dotnet6 6.0.109-0ubuntu1~22.04.1

In general, a standard system update will make all the necessary changes. A restart may be required after the update if any affected files are being used.

References:
https://ubuntu.com/security/notices/USN-5609-1
CVE-2022-38013

Package Information:
https://launchpad.net/ubuntu/+source/dotnet6/6.0.109-0ubuntu1~22.04.1