[CentOS] Kernel live patching on CentOS Stream 9

Thu Jan 13 17:32:08 UTC 2022
Valeri Galtsev <galtsev at kicp.uchicago.edu>

On 1/13/22 12:28 PM, Johnny Hughes wrote:
> On 1/7/22 12:18, Gordon Messmer wrote:
>> On 1/7/22 09:39, Gionatan Danti wrote:
>>> is kernel live patching working for CentOS Stream 9? 
>> https://access.redhat.com/solutions/2206511
>> My understanding of live kernel patching is that the feature allows 
>> systems to update specific individual kernel functions, and is 
>> primarily useful for addressing security vulnerabilities (and not, for 
>> example, for updating from one kernel version to another).  I don't 
>> know for a fact, but my expectation is that CentOS Stream systems 
>> aren't going to get "live" patches because there's no ongoing support 
>> for individual kernels.
> Indeed .. you will get those things rolled into the next kernel, but not 
> as live patches.

In layman's language summary: RedHat Enterprise features (including 
"live" kernel patching) are to be expected _only_ in RedHat Enterprise 
"binary replica" distributions, which CentOS Stream is not.