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Ubuntu FRR Update Fixes RPKI Processing Regression

Ubuntu FRR Update Fixes RPKI Processing Regression

First seen 5 Nov 2026, 22:15 UTC • •
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ThreatCluster AI
ThreatCluster •November 5, 2026 at 22:15 UTC
  • •A regression in FRR software affected RPKI processing on Ubuntu 20.04 LTS.
  • •The issue was caused by a patch for CVE-2024-55553, leading to potential denial of service.
  • •Users are urged to update to the latest package versions to mitigate the vulnerabilities.

On November 5, 2026, Ubuntu released USN-7230-3 to address a regression in the FRR software that affected RPKI processing. The regression, introduced by a previous patch (USN-7230-2) for CVE-2024-55553, caused FRR to stop processing RPKI updates after the first one, leading to unvalidated routes when RPKI data changed. This issue primarily impacted Ubuntu 20.04 LTS, where the BGP daemon also failed to start with the RPKI module enabled. The vulnerabilities fixed include CVE-2024-44070, which could allow remote denial of service attacks. Users are advised to update their systems to restore proper functionality and security. The update is now available for Ubuntu 20.04 LTS, 22.04 LTS, and 24.04 LTS.

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Timeline

2024-08-19
CVE-2024-44070 published
A critical vulnerability in FRR was disclosed, allowing potential denial of service attacks.
Ubuntu
2025-01-06
CVE-2024-55553 published
A high-severity vulnerability in FRR was published, leading to a regression in RPKI support.
Ubuntu
2026-11-05
USN-7230-3 released
Ubuntu released an update to fix the RPKI processing regression in FRR affecting Ubuntu 20.04 LTS.
Linuxsecurity

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Common questions

Which versions of Ubuntu are affected?
The regression primarily affects Ubuntu 20.04 LTS, with some implications for 22.04 LTS and 24.04 LTS.
What should I do if I'm affected?
Update your system to the latest package versions as outlined in the USN-7230-3 advisory.
Are there any known exploits for these vulnerabilities?
No, there are currently no confirmed exploits in the wild for these vulnerabilities.