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I think you don't understand. Qubes relies on software virtualization in conjunction with hardware assisted virtualization instruction sets. The aforementioned
by Always_Anon 3y ago
I think you don't understand. Qubes relies on software virtualization in conjunction with hardware assisted virtualization instruction sets. The aforementioned vulnerability existed in Qubes Xen.
- deleted 3y ago[deleted]
- fsflover 3y agoIt seems the aforementioned vulnerability (XSA-133) didn't even affect Qubes: https://www.qubes-os.org/security/xsa/ https://www.qubes-os.org/security/xsa/. Also, such vulnerabilities were the reason for them to switch to VT-d by default: https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-030-2017.txt https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qs.... I'm not an expert, but how could it affect the VT-d even in principle? AFAIK VM escape is impossible with software exploits in this case, only side-channel attacks are.