Linux 4.14 & 4.15 Get KPTI Protection For 64-bit ARM

[phoronix]

Phoronix: Linux 4.14 & 4.15 Get KPTI Protection For 64-bit ARM

Greg Kroah-Hartman released a slew of stable point releases today to supported Linux kernel series. For the 4.14 and 4.15 branches this includes Kernel Page Table Isolation (KPTI) for AArch64 hardware...

http://www.phoronix.com/scan.php?page=news_item&px=Linux-4.14-4.15-ARM64-KPTI

[Azrael5]

So far, we don't know exactly which cpus are affected by those fuckiest vulnerabilities and if the patches will make slow also immune cpus.

[Zola]

So far, we don't know exactly which cpus are affected by those fuckiest vulnerabilities and if the patches will make slow also immune cpus.

As far as much is known all ARM OoO designs from A9 to A75 are affected but on Big.Litle SoC's its possible to prevent possible exploits by adjusting background processes limit (on both Linux & Android) to that it never gets migrated on the OoO core's in the first place.
You would had to be extremely dumb to install the app with the exploit and let it run in front of you but never the less still possible.
I love Greg Kroah-Hartman work on getting sched logic in line, working & improving it over the years and cam only imagine how hard all of this actually failed to him.