Linux Kernel 5.15 End of Life

Support dates and upgrade guidance — rebuilt from live data.

Supported

Linux Kernel 5.15 is actively supported. It reaches end of life on 31 Dec 2026.

76 days of security support left

5.15.223 latest release

96% of this branch's supported lifetime has elapsed — 31 Oct 2021 → 31 Dec 2026.

Check your versionuname -r

Support timeline

Official dates from the Linux Kernel release process.

Linux Kernel 5.15 is the newest branch — this is the longest runway currently available.

Branch	End of life	Days left	vs 5.15
Linux Kernel 6.18	31 Dec 2028	807	+731 days
Linux Kernel 6.12	31 Dec 2028	807	+731 days
Linux Kernel 6.6	31 Dec 2027	441	+365 days
Linux Kernel 6.1	31 Dec 2027	441	+365 days
Linux Kernel 5.15	31 Dec 2026	76	this branch
Linux Kernel 5.10	31 Dec 2026	76	0 days

When does Linux Kernel 5.15 reach end of life?

Linux Kernel 5.15 reaches end of life on 31 Dec 2026 — 76 days from now. After that date it receives no security fixes.

Is Linux Kernel 5.15 still supported?

Yes. Linux Kernel 5.15 is currently maintained. Latest release: 5.15.223, published 15 Oct 2026.

What happens when Linux Kernel 5.15 reaches end of life?

Security fixes stop. After 31 Dec 2026 this branch receives no further updates under standard support.

How long do I have to upgrade from Linux Kernel 5.15?

76 days. This is already the newest branch, so this is the longest runway currently available.