On 2020-06-29 21:17, Sreyan Chakravarty wrote: > > On 6/29/20 6:19 PM, Ed Greshko wrote: >> Well, first, you did reboot after the latest version of microcode_ctl was >> installed? >> The microcode gets applied at boot time, each time. >> >> On my system, microcode_ctl was updated on 2020-06-19. >> >> dnf history list microcode_ctl >> >> will tell you when that package was updated. >> >> You've rebooted since then? > > I rebooted multiple times since the installation and I have rebooted now just > to be sure. > > $ dnf history list microcode_ctl > ID | Command line | Date and time | Action(s) | > Altered > -------------------------------------------------------------------------------- > 28 | | 2020-06-23 01:41 | E, I, U | 115 > < > 26 | | 2020-06-12 17:51 | I, U | 455 > >< > 19 | | 2020-05-09 18:02 | D, E, I, U | 2335 > >< > 3 | | 2020-04-13 17:19 | E, I, U | 1115 > >< > 1 | | 2020-04-13 16:42 | Install | 2197 > >E > > > As you see on my system the microcode_ctl package was installed on 23rd June, > 2020. > > > What is the next step ? >
Well, I suppose that would be filing a bugzilla against microcode_ctl. Even though my CPU isn't affected I get... CVE-2020-0543 aka 'Special Register Buffer Data Sampling (SRBDS)' * Mitigated according to the /sys interface: YES (Not affected) * SRBDS mitigation control is supported by the kernel: YES (found SRBDS implementation evidence in kernel image. Your kernel is up to date for SRBDS mitigation) * SRBDS mitigation control is enabled and active: NO > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not > vulnerable) The first line shows mitigation is there....but not being used. You system reports... * Mitigated according to the /sys interface: NO (Vulnerable: No microcode) So, it sounds to me as if the conditions don't exist for microcode_ctl to update the microcode on boot even with the most recent update. In the BZ I would include the output of "cat /proc/cpuinfo". -- The key to getting good answers is to ask good questions.
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