Canonical accelerates Ubuntu kernel updates to weekly cycle

Canonical is overhauling the Ubuntu kernel Stable Release Update (SRU) process, moving to a system that delivers a kernel release every week. This replaces the previous model of a four-week regular cycle and a two-week security-focused cycle.

The change is driven by an explosion in reported vulnerabilities (CVEs). Canonical attributes this increase to the rise of AI-assisted bug hunting, noting that large language models and specialized AI agents have transformed bug discovery into a highly automated process. Additionally, the Linux kernel community’s status as a CVE Numbering Authority has led to more identifiers being assigned to kernel flaws.

Under the new two-week cycle, the first week is dedicated to patch integration, package building, and basic smoke tests, after which release candidates are moved to the ‘-proposed’ repository. The second week focuses on hardware certification, distribution integration, and regression testing. Because a new cycle begins every week, a new kernel is released continuously.