pci: validate index before accessing MSI-X arrays #6657
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The index is derived from the access offset, so it is controlled by the guest. Check it before accessing internal data structures. Since Rust enforces strict bound check even in release builds, the VMM process will crash if the guest misbehaves. There is no security issue since the guest can only DoS itself. Signed-off-by: Wei Liu <[email protected]>
rbradford
approved these changes
Aug 14, 2024
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The index is derived from the access offset, so it is controlled by the guest. Check it before accessing internal data structures.
Since Rust enforces strict bound check even in release builds, the VMM process will crash if the guest misbehaves. There is no security issue since the guest can only DoS itself.