Loss of console soft scrollback
by upnort from LinuxQuestions.org on (#5AAJ0)
Once in a while I feel as though free/libre software just kicked me in the gut.
For the past couple of weeks I noticed console soft scrollback stopped functioning (Shift+PgUp/PgDown). First I noticed in my Current VM. I shrugged figuring the issue related to VirtualBox and the continual changes of Current. Then I noticed the same on my 14.2 systems.
Today I dug deeper. Apparently the feature was removed from newer kernels and backported to supported kernels as a security patch. The culprit is CVE-2020-14390.
The change would be noticed in 14.2 by anybody updating from the 4.4.227 to 4.4.240 kernel.
Searching the web will find the related lkml discussions and patches.
The console soft scrollback code is just gone. A feature I always have found useful for debugging boot spew.
This is one of those moments when an online goddammit seems appropriate.
Hell.
For the past couple of weeks I noticed console soft scrollback stopped functioning (Shift+PgUp/PgDown). First I noticed in my Current VM. I shrugged figuring the issue related to VirtualBox and the continual changes of Current. Then I noticed the same on my 14.2 systems.
Today I dug deeper. Apparently the feature was removed from newer kernels and backported to supported kernels as a security patch. The culprit is CVE-2020-14390.
The change would be noticed in 14.2 by anybody updating from the 4.4.227 to 4.4.240 kernel.
Searching the web will find the related lkml discussions and patches.
The console soft scrollback code is just gone. A feature I always have found useful for debugging boot spew.
This is one of those moments when an online goddammit seems appropriate.
Hell.