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extcon: usbc-cros-ec: Use struct_size() helper in kzalloc()

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Make use of the struct_size() helper instead of an open-coded version,
in order to avoid any potential type mistakes or integer overflows that,
in the worst scenario, could lead to heap overflows.

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
This commit is contained in:
Gustavo A. R. Silva 2022-01-25 13:26:34 -06:00 committed by Chanwoo Choi
parent 4c018cc87e
commit 8ae4471d38
1 changed files with 1 additions and 1 deletions
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drivers/extcon/extcon-usbc-cros-ec.c
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@ -68,7 +68,7 @@ static int cros_ec_pd_command(struct cros_ec_extcon_info *info,
struct cros_ec_command *msg;
int ret;
msg = kzalloc(sizeof(*msg) + max(outsize, insize), GFP_KERNEL);
msg = kzalloc(struct_size(msg, data, max(outsize, insize)), GFP_KERNEL);
if (!msg)
return -ENOMEM;