Canonical plans to publish Ubuntu kernel releases weekly by staggering two-week kernel Stable Release Update (SRU) cycles one week apart. The schedule keeps preparation, certification, Ubuntu integration and regression testing in place; the weekly rhythm comes from overlapping cycles, not from shortening each one.
How the staggered cycles work
Each announced SRU cycle lasts two weeks, and the next begins one week after the previous one starts. That overlap is what creates an expected weekly release cadence. The former schedule had separate four-week regular kernel SRUs and two-week security SRUs.
Preparation and testing before a stable release
During the first week, Canonical plans to select and integrate patches, prepare and build packages, and run initial boot and operation checks. Candidate builds go to Ubuntu’s -proposed pocket before certification is complete.
The second week is for Ubuntu certification, distribution integration and regression testing. A stable kernel release follows once that cycle’s work is complete.
Early access and vulnerability mitigations
Organizations willing to take responsibility for their own acceptance testing can use candidate builds from -proposed before Canonical finishes its certification. That offers an earlier route for teams that need to evaluate a candidate in their own environment.
Canonical also aims to move affected environments toward a safer state within 24–48 hours of a vulnerability’s public disclosure. Where a safe workaround is available, it plans to provide one; otherwise, it says it will offer general hardening guidance. That is a mitigation goal while a patch is prepared, not a promise that the patch itself will arrive within that window.
Canonical cites rising CVE volume as a reason for changing the schedule, pointing to AI-assisted bug discovery and the upstream kernel community’s assignment of CVE identifiers to thousands of bugs.
What the cadence means for Ubuntu users
Weekly releases describe Canonical’s planned publishing schedule, not a requirement to install every kernel update each week. After installing a kernel update, users need to reboot to activate the new kernel; delaying installation also delays the corresponding fix.
The plan concerns Ubuntu kernel SRU maintenance. It does not announce a new upstream major kernel version every week.
