[USN-8105-2] FreeRDP regression

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Ubuntu Security Notice USN-8105-2
March 19, 2026

freerdp3 regression
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 25.10
- Ubuntu 24.04 LTS

Summary:

USN-8105-1 introduced a regression in FreeRDP

Software Description:
- freerdp3: RDP client for Windows Terminal Services

Details:

USN-8105-1 fixed vulnerabilities in FreeRDP. The update introduced a
regression which could cause FreeRDP to crash. This update fixes the
problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that FreeRDP incorrectly handled certain RDP packets. A
remote attacker could use this issue to cause FreeRDP to crash, resulting
in a denial of service, or possibly execute arbitrary code.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 25.10
libfreerdp3-3 3.16.0+dfsg-2ubuntu0.4

Ubuntu 24.04 LTS
libfreerdp3-3 3.5.1+dfsg1-0ubuntu1.5

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-8105-2
https://ubuntu.com/security/notices/USN-8105-1
https://launchpad.net/bugs/2144889

Package Information:
https://launchpad.net/ubuntu/+source/freerdp3/3.16.0+dfsg-2ubuntu0.4
https://launchpad.net/ubuntu/+source/freerdp3/3.5.1+dfsg1-0ubuntu1.5