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[USN-8175-1] FRR vulnerability

Posted on 16 April 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8175-1
April 15, 2026

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

- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

FRR could allow unintended access to network services.

Software Description:
- frr: FRRouting suite of internet protocols

Details:

It was discovered that FRR did not correctly handle certain network
requests. A remote attacker could possibly use this issue to gain
unauthorized access to resources.

Update instructions:

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

Ubuntu 25.10
frr 10.4.1-3ubuntu1.2

Ubuntu 24.04 LTS
frr 8.4.4-1.1ubuntu6.6

Ubuntu 22.04 LTS
frr 8.1-1ubuntu1.15

Ubuntu 20.04 LTS
frr 7.2.1-1ubuntu0.2+esm4
Available with Ubuntu Pro

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

References:
https://ubuntu.com/security/notices/USN-8175-1
CVE-2026-5107

Package Information:
https://launchpad.net/ubuntu/+source/frr/10.4.1-3ubuntu1.2
https://launchpad.net/ubuntu/+source/frr/8.4.4-1.1ubuntu6.6
https://launchpad.net/ubuntu/+source/frr/8.1-1ubuntu1.15

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