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ASoC: SDCA: Ensure that Control Range is large enough for header

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When reading the Ranges structure from an SDCA Control, ensure that the
read data is large enough to encompass the required header before
accessing it.

Fixes: 64fb5af1d1 ("ASoC: SDCA: Add parsing for Control range structures")
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.dev>
Link: https://patch.msgid.link/20260722103500.872714-5-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Charles Keepax 2026-07-22 11:35:00 +01:00 committed by Mark Brown
parent 556d872e7c
commit 951e921b03
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GPG Key ID: 24D68B725D5487D0
1 changed files with 2 additions and 0 deletions
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2
sound/soc/sdca/sdca_functions.c
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@ -855,6 +855,8 @@ static int find_sdca_control_range(struct device *dev,
return 0;
else if (num_range < 0)
return num_range;
else if (num_range < 2 * sizeof(*limits))
return -EINVAL;
range_list = devm_kcalloc(dev, num_range, sizeof(*range_list), GFP_KERNEL);
if (!range_list)