Commit d356db08 authored Mar 22, 2019 by Pankaj Bharadiya Committed by Greg Kroah-Hartman May 10, 2019

ASoC: dapm: Fix NULL pointer dereference in snd_soc_dapm_free_kcontrol



[ Upstream commit cacea3a90e211f0c111975535508d446a4a928d2 ]

w_text_param can be NULL and it is being dereferenced without checking.
Add the missing sanity check to prevent  NULL pointer dereference.

Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent 6f69661f

sound/soc/soc-dapm.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -3847,6 +3847,10 @@ snd_soc_dapm_free_kcontrol(struct snd_soc_card *card,
		int count;

		devm_kfree(card->dev, (void )private_value);

		if (!w_param_text)
		return;

		for (count = 0 ; count < num_params; count++)
		devm_kfree(card->dev, (void *)w_param_text[count]);
		devm_kfree(card->dev, w_param_text);