I just checked the Cisco IOS-XR code. It's not vulnerable to any of the 3 flaws listed in the below linked hackernews article.

Kind Regards,

Jakob

Date: Wed, 3 May 2023 12:52:46 +0300
From: Hank Nussbacher <hank@efes.iucc.ac.il>

On 02/05/2023 17:56, Warren Kumari wrote:

For those that like FRR:
https://thehackernews.com/2023/05/researchers-uncover-new-bgp-flaws-in.html

Regards,
Hank