USN-8025-2: .NET vulnerability
Publication date
16 February 2026
Overview
.NET could be made to bypass security features.
Releases
Details
USN 8025-1 fixed a vulnerability in .NET. This update provides the
corresponding fix for Ubuntu 24.04 LTS.
Original advisory details:
Kevin Jones discovered that the System.Security.Cryptography.Cose
component in .NET did not properly handle certain missing special
elements in input data. An attacker could possibly use this issue to
bypass security checks and gain unauthorized access or perform data
manipulation.
USN 8025-1 fixed a vulnerability in .NET. This update provides the
corresponding fix for Ubuntu 24.04 LTS.
Original advisory details:
Kevin Jones discovered that the System.Security.Cryptography.Cose
component in .NET did not properly handle certain missing special
elements in input data. An attacker could possibly use this issue to
bypass security checks and gain unauthorized access or perform data
manipulation.
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
Reduce your security exposure
Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.