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usb: typec: tipd: Add an additional overflow check

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tps6598x_block_read already checks for the maximum length of the read
but tps6598x_block_write does not. Add the symmetric check there as
well.

Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Link: https://lore.kernel.org/r/20210914140235.65955-2-sven@svenpeter.dev
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sven Peter
2021-09-14 16:02:34 +02:00
committed by Greg Kroah-Hartman
parent 718dccb477
commit ac588dfa66
1 changed files with 3 additions and 0 deletions
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3
drivers/usb/typec/tipd/core.c
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@@ -139,6 +139,9 @@ static int tps6598x_block_write(struct tps6598x *tps, u8 reg,
{
u8 data[TPS_MAX_LEN + 1];
if (len + 1 > sizeof(data))
return -EINVAL;
if (!tps->i2c_protocol)
return regmap_raw_write(tps->regmap, reg, val, len);