Arbitrary code execution in QubesOS via copy-to-VM error reporting backchannel
Qubes OS has released a security bulletin addressing a critical vulnerability that allows arbitrary code execution in Dom0. The flaw exists in the error reporting backchannel of the qvm-copy-to-vm tool, which could allow a compromised qube to take control of the entire system.
Why it matters
This is a high-severity security patch for a privacy-focused operating system, essential for users maintaining high-security environments.
We have published Qubes Security Bulletin (QSB) 118: Dom0 arbitrary code execution in qvm-copy-to-vm error reporting . The text of this QSB and its accompanying cryptographic signatures are reproduced below, followed by a general explanation of this announcement and authentication instructions.
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