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| author | Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2022-08-24 10:06:19 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-11-10 20:14:22 +0300 |
| commit | 7fdc58d8c213b7adccb6daa9e9cf14e1fadff269 (patch) | |
| tree | 37dbe9cb476e99824812783d73af6a131732dbe2 /drivers | |
| parent | 1609231f86760c1f6a429de7913dd795b9faa08c (diff) | |
| download | linux-7fdc58d8c213b7adccb6daa9e9cf14e1fadff269.tar.xz | |
media: cros-ec-cec: limit msg.len to CEC_MAX_MSG_SIZE
[ 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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/cec/platform/cros-ec/cros-ec-cec.c | 2 |
1 files changed, 2 insertions, 0 deletions
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 2d95e16cd248..f66699d5dc66 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); |