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An Anonymous Coward writes:

Google released a hugely important patch for Chrome OS. The post about the patch in question [blogspot.com] states that it patched "a chain of exploits that gains code execution in guest mode across reboots, delivered via web page." The fact that the person won the top prize in their pwnium project [google.com] means that the person in question managed to get a working rootkit. There is also mention of needing additional hardening, which may mean a whole class of vulnerabilities are present. One paranoid commentator on another site pointed to "a kernel key version update in the TPM" in the patch as meaning their old signing key having lead to the vulnerability.

One thing is sure, however, once the security embargo ends, that bug report might be a good read.

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