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submitted 4 months ago* (last edited 4 months ago) by umami_wasbi@lemmy.ml to c/linux@lemmy.ml

I want to check if my Lenovo T480 is afftected by the recent PKFail, but have no idea how to extract the bios firmware for validation. Can someone detail the steps? Thanks.

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[-] CameronDev@programming.dev 10 points 4 months ago

https://arstechnica.com/security/2024/07/secure-boot-is-completely-compromised-on-200-models-from-5-big-device-makers/

Bottom of that article, there are commands to run from windows and Linux to detect it. Probably easier than messing with the firmware.

[-] umami_wasbi@lemmy.ml 8 points 4 months ago* (last edited 4 months ago)

Thanks for the hint. I followed and checked: safe

$ efi-readvar -v PK
Variable PK, length 983
PK: List 0, type X509
    Signature 0, size 955, owner 3cc24e96-22c7-41d8-8863-8e39dcxxxxxx
        Subject:
            C=JP, ST=Kanagawa, L=Yokohama, O=Lenovo Ltd., CN=Lenovo Ltd. PK CA 2012
        Issuer:
            C=JP, ST=Kanagawa, L=Yokohama, O=Lenovo Ltd., CN=Lenovo Ltd. PK CA 2012
this post was submitted on 27 Jul 2024
28 points (96.7% liked)

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