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The firewall verified gather buffers before copying them. This allowed a malicious application to rewrite the buffer content by timing the rewrite carefully. This patch makes the buffer validation occur after copying the buffers. Signed-off-by: Arto Merilainen <amerilainen@nvidia.com> Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>