That bug had nothing to do with Debian. Follow the reports in the fine thread you've linked and you'll see it was an upstream issue.

Debian doesn't "backport" anything, they ship upstream LTS kernels straight, so please stop spreading this misinformation.

For some bizarre reason I can't conceive people not only believe but also keep complaining that Debian ships franken-kernels like RHEL does. See [0] for another instance.

[0] https://news.ycombinator.com/item?id=44849988