Ubuntu Patches Critical MySQL Vulnerabilities Across LTS Releases
Ubuntu has released security updates addressing multiple MySQL vulnerabilities across its LTS and current releases, with versions 8.0.46 and 8.4.9 now available. Organizations running MySQL on Ubuntu 20.04 LTS and newer should prioritize patching to mitigate exposure to upstream security issues.
TL;DR
- USN-8363-2 delivers MySQL security fixes to Ubuntu 20.04 LTS, following earlier patches for newer releases
- MySQL upgraded to 8.0.46 (22.04/24.04 LTS) and 8.4.9 (25.10/26.04 LTS) to address multiple vulnerabilities
- Updates include bug fixes and new features alongside security patches; review release notes for potential breaking changes
- Administrators should test patches in non-production environments before deployment due to possible incompatibilities
Ubuntu has released a follow-up security advisory (USN-8363-2) addressing multiple vulnerabilities in MySQL across its supported releases. This update extends the security fixes previously delivered in USN-8363-1 to Ubuntu 20.04 LTS systems, ensuring consistent protection across the LTS lifecycle.
The advisory includes upgraded MySQL versions: 8.0.46 for Ubuntu 22.04 LTS and 24.04 LTS, and 8.4.9 for Ubuntu 25.10 and 26.04 LTS. These upstream releases resolve security issues identified by Oracle and include additional bug fixes and feature enhancements.
Organizations relying on MySQL for production workloads should review the official release notes and test patches in staging environments before deployment, as the updates may introduce incompatible changes alongside security improvements.
Vulnerability Scope and Affected Versions
- Multiple security issues discovered in MySQL addressed through upstream version updates
- Ubuntu 20.04 LTS receives MySQL patches via USN-8363-2 to align with earlier LTS releases
- Vulnerability details and CVE information available in Oracle's April 2026 CPU security alert
- All supported Ubuntu LTS and current releases now have corresponding security fixes available
Deployment Considerations
- Updated packages contain security fixes, bug fixes, new features, and potentially breaking changes
- Review MySQL 8.0.46 and 8.4.9 release notes before applying updates to production systems
- Test patches in non-production environments to identify compatibility issues with existing applications
- Plan maintenance windows for database restarts required by the MySQL upgrade process
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