Fix: Validate ST20 continuation bounds - #1671
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A continuation SRD could pass first-row validation while its second copy started beyond the frame buffer. Validate the continuation row and length before copying; cover rejected and valid padded packets. Signed-off-by: Wilczynski, Andrzej <andrzej.wilczynski@intel.com>
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A continuation SRD could pass first-row validation while its second copy started beyond the frame buffer. Validate the continuation row and length before copying; cover rejected and valid padded packets.