Re: Where are the microcode updates for Crosstalk in F32 ?

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On 2020-06-29 07:33, Sreyan Chakravarty wrote:
>
> Hi,
>
> Well guys, its time to panic once again.
>
>
> I just found out my system is vulnerable to the new Crosstalk vulnerability by running the popular Meltdown OVH script.
>
> More about the vulnerability over here:
>
> https://www.vusec.net/projects/crosstalk/
>
> These exploits get worse each time, this one affects all cores.
>
>
> This is how I tested for the vulnerability.
>
> Downloaded spectre-meltdown-checker.sh via :
>
> wget https://meltdown.ovh -O spectre-meltdown-checker.sh
>
> and then just executed with sudo.
>
> This is the output I got:
>
> * SRBDS mitigation control is enabled and active:  NO 
> > STATUS:  VULNERABLE  (Your CPU microcode may need to be updated to mitigate the vulnerability)
>
> CVE-2020-0543:KO

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)

This was reported fixed in microcode_ctl-2.1-39.fc32 as shown in the links you've provided.

Do you have that package updated?


-- 
The key to getting good answers is to ask good questions.
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