ASoC: SOF: amd: validate SizeFWSigned before signed FW length on ACP7x

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The ACP7.B/7.F ACPI signed path already reads SizeFWSigned from the image
header into size_fw. Before adding ACP_IMAGE_HEADER_SIZE for SHA DMA,
reject payload size zero or any size_fw with size_fw > fw_bin_size -
ACP_IMAGE_HEADER_SIZE, so size_fw + ACP_IMAGE_HEADER_SIZE cannot exceed the
supplied firmware buffer.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://patch.msgid.link/20260701095759.1012929-10-Vijendar.Mukunda@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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Vijendar Mukunda 2026-07-01 15:25:10 +05:30 • committed by Mark Brown

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sound/soc/sof/amd/acp-loader.c

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