ASoC: sigmadsp: Refuse to load firmware files with a non-supported version
Make sure to check the version field of the firmware header to make sure to not accidentally try to parse a firmware file with a different layout. Trying to do so can result in loading invalid firmware code to the device. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
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@ -159,6 +159,13 @@ int _process_sigma_firmware(struct device *dev,
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goto done;
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goto done;
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}
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}
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if (ssfw_head->version != 1) {
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dev_err(dev,
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"Failed to load firmware: Invalid version %d. Supported firmware versions: 1\n",
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ssfw_head->version);
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goto done;
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}
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crc = crc32(0, fw->data + sizeof(*ssfw_head),
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crc = crc32(0, fw->data + sizeof(*ssfw_head),
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fw->size - sizeof(*ssfw_head));
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fw->size - sizeof(*ssfw_head));
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pr_debug("%s: crc=%x\n", __func__, crc);
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pr_debug("%s: crc=%x\n", __func__, crc);
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