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submitted 1 year ago* (last edited 1 year ago) by notme@lemmy.world to c/linux@lemmy.ml

I'm a newb and ran the recommended mitigation code to set a chicken bit on my processor. After running it there was no indication that it worked. Is there a simple way to use rdmsr to check?

https://lock.cmpxchg8b.com/zenbleed.html#solution

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[-] notme@lemmy.world 4 points 1 year ago* (last edited 1 year ago)

Thanks, it works. That's a bit worrying.

Do you think Ubuntu 22.04 will get the security update soon? I got a microcode update today but i think that's only a fix for server cpus and not desktop cpus.

For anyone having permission problems turn off secure boot in order for this to work.

[-] ryannathans@lemmy.world 3 points 1 year ago

Microcode fixes the issue as of 3 days ago

[-] notme@lemmy.world 4 points 1 year ago

I thought that was only for Eypc processors with desktop processor fixes coming later this year. The articles are not very clear with what is fixed when.

[-] YonatanAvhar@programming.dev 2 points 1 year ago

I also read that fixes are being released now for the high-end chips, but the desktop fixes will be released significantly later

this post was submitted on 26 Jul 2023
28 points (93.8% liked)

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