https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=262604
Bug ID: 262604
Summary: Feature request: reseed kernel RNG after VM
snapshot/resume
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
This came as a report to secteam@, but should be tracked in the public
bugzilla.
> Specifically, we've run FreeBSD inside VMware workstation 9.0.0, captured a
> full-memory snapshot (using the ‘snapshot' button in VMware), and resumed the
> guest VM multiple times from the same snapshot (using the ‘revert’ button in
> VMware). We’ve observed that /dev/random produces repeated outputs each time
> the guest is resumed from the same snapshot. In the worst case, we’ve
> observed
> repeated outputs for as long as 100 seconds after resumption.
Paper: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6956587
admbugs: 499
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