Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 6.0 07/34] media: cros-ec-cec: limit msg.len to CEC_MAX_MSG_SIZE | Date | Tue, 1 Nov 2022 07:26:59 -0400 |
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From: Hans Verkuil <hverkuil-cisco@xs4all.nl>
[ Upstream commit 2dc73b48665411a08c4e5f0f823dea8510761603 ]
I expect that the hardware will have limited this to 16, but just in case it hasn't, check for this corner case.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/media/cec/platform/cros-ec/cros-ec-cec.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/media/cec/platform/cros-ec/cros-ec-cec.c b/drivers/media/cec/platform/cros-ec/cros-ec-cec.c index 3b583ed4da9d..e5ebaa58be45 100644 --- a/drivers/media/cec/platform/cros-ec/cros-ec-cec.c +++ b/drivers/media/cec/platform/cros-ec/cros-ec-cec.c @@ -44,6 +44,8 @@ static void handle_cec_message(struct cros_ec_cec *cros_ec_cec) uint8_t *cec_message = cros_ec->event_data.data.cec_message; unsigned int len = cros_ec->event_size; + if (len > CEC_MAX_MSG_SIZE) + len = CEC_MAX_MSG_SIZE; cros_ec_cec->rx_msg.len = len; memcpy(cros_ec_cec->rx_msg.msg, cec_message, len); -- 2.35.1
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