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| author | Srinivas Kandagatla <srinivas.kandagatla@linaro.org> | 2021-03-09 14:21:29 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-03-10 12:51:12 +0000 |
| commit | 3bb4852d598f0275ed5996a059df55be7318ac2f (patch) | |
| tree | 787304bfd042a05f81b6ccf98c60724785982253 /sound | |
| parent | 4800fe6ea1022eb240215b1743d2541adad8efc7 (diff) | |
| download | linux-3bb4852d598f0275ed5996a059df55be7318ac2f.tar.gz linux-3bb4852d598f0275ed5996a059df55be7318ac2f.tar.bz2 linux-3bb4852d598f0275ed5996a059df55be7318ac2f.zip | |
ASoC: codecs: wcd934x: add a sanity check in set channel map
set channel map can be passed with a channel maps, however if
the number of channels that are passed are more than the actual
supported channels then we would be accessing array out of bounds.
So add a sanity check to validate these numbers!
Fixes: a61f3b4f476e ("ASoC: wcd934x: add support to wcd9340/wcd9341 codec")
Reported-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210309142129.14182-4-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/wcd934x.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sound/soc/codecs/wcd934x.c b/sound/soc/codecs/wcd934x.c index 40f682f5dab8..d18ae5e3ee80 100644 --- a/sound/soc/codecs/wcd934x.c +++ b/sound/soc/codecs/wcd934x.c @@ -1873,6 +1873,12 @@ static int wcd934x_set_channel_map(struct snd_soc_dai *dai, wcd = snd_soc_component_get_drvdata(dai->component); + if (tx_num > WCD934X_TX_MAX || rx_num > WCD934X_RX_MAX) { + dev_err(wcd->dev, "Invalid tx %d or rx %d channel count\n", + tx_num, rx_num); + return -EINVAL; + } + if (!tx_slot || !rx_slot) { dev_err(wcd->dev, "Invalid tx_slot=%p, rx_slot=%p\n", tx_slot, rx_slot); |