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
Full output here:
https://pastebin.com/raw/hyfFBbaF
As you can see the tool specifies that my microcode is not the latest.
That being said, where do I find the latest microcode from ?
My OS is fully updated, and the firmware and microcode is also latest
according to DNF:
$ sudo dnf update linux-firmware
Dependencies resolved.
Nothing to do.
Complete!
$ sudo dnf update microcode_ctl
Dependencies resolved.
Nothing to do.
Complete!
So where is the microcode update in Fedora for this ??
Canonical has already published microcode updates for this, as shown here:
https://youtu.be/UR-5vAZ1cGg?t=1160
<rant>
It kind of seems frustrating that a bleeding edge distro like Fedora still hasn't
provided updates yet. While Ubuntu a distro that doesn't always use the latest
software already has a fix.
</rant>
What can I do now ? What is progress for Fedora ?
Will the microcode from Canonical work for Fedora ? Dumb question I know but I
am desperate.
Let me know if any further info is required.
Some more info about my CPU:
https://pastebin.com/raw/TNJS930F
What is everyone else in the community doing about this ?
Thanks.
--
Regards,
Sreyan