Linux Kernel 6.6 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Supported
Linux Kernel 6.6 is actively supported. It reaches end of life on 31 Dec 2027.
509 days of security support left
6.6.149 latest release
67% of this branch's supported lifetime has elapsed — 30 Oct 2023 → 31 Dec 2027.
Check your versionuname -r
Support timeline
Official dates from the Linux Kernel release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 30 Oct 2023 | — |
| End of life (scheduled) | 31 Dec 2027 | in 509 days |
| Latest release | 6.6.149 · 6 Aug 2026 | current |
How much runway a newer branch buys
Linux Kernel 6.6 is the newest branch — this is the longest runway currently available.
| Branch | End of life | Days left | vs 6.6 |
|---|---|---|---|
| Linux Kernel 6.18 | 31 Dec 2028 | 875 | +366 days |
| Linux Kernel 6.12 | 31 Dec 2028 | 875 | +366 days |
| Linux Kernel 6.6 | 31 Dec 2027 | 509 | this branch |
| Linux Kernel 6.1 | 31 Dec 2027 | 509 | 0 days |
| Linux Kernel 5.15 | 31 Dec 2026 | 144 | -365 days |
| Linux Kernel 5.10 | 31 Dec 2026 | 144 | -365 days |
Frequently asked questions
When does Linux Kernel 6.6 reach end of life?
Linux Kernel 6.6 reaches end of life on 31 Dec 2027 — 509 days from now. After that date it receives no security fixes.
Is Linux Kernel 6.6 still supported?
Yes. Linux Kernel 6.6 is currently maintained. Latest release: 6.6.149, published 6 Aug 2026.
What happens when Linux Kernel 6.6 reaches end of life?
Security fixes stop. After 31 Dec 2027 this branch receives no further updates under standard support.
How long do I have to upgrade from Linux Kernel 6.6?
509 days. This is already the newest branch, so this is the longest runway currently available.
All Linux Kernel versions
7.1 supported 7.0 EOL 2026 6.19 EOL 2026 6.18 supported 6.17 EOL 2025 6.16 EOL 2025 6.15 EOL 2025 6.14 EOL 2025 6.13 EOL 2025 6.12 supported 6.11 EOL 2024 6.10 EOL 2024 6.9 EOL 2024 6.8 EOL 2024 6.7 EOL 2024 6.6 supported 6.5 EOL 2023 6.4 EOL 2023 6.3 EOL 2023 6.2 EOL 2023 6.1 supported 6.0 EOL 2023 5.19 EOL 2022 5.18 EOL 2022 5.17 EOL 2022 5.16 EOL 2022 5.15 supported 5.14 EOL 2021 5.13 EOL 2021 5.12 EOL 2021 5.11 EOL 2021 5.10 supported 5.4 EOL 2025 4.19 EOL 2024 4.14 EOL 2024 4.9 EOL 2023