From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Hans Verkuil <hverkuil-cisco@xs4all.nl>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Sasha Levin <sashal@kernel.org>,
bleung@chromium.org, linux-media@vger.kernel.org,
chrome-platform@lists.linux.dev
Subject: [PATCH AUTOSEL 4.19 2/6] media: cros-ec-cec: limit msg.len to CEC_MAX_MSG_SIZE
Date: Tue, 1 Nov 2022 07:31:12 -0400 [thread overview]
Message-ID: <20221101113118.800889-2-sashal@kernel.org> (raw)
In-Reply-To: <20221101113118.800889-1-sashal@kernel.org>
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/platform/cros-ec-cec/cros-ec-cec.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/media/platform/cros-ec-cec/cros-ec-cec.c b/drivers/media/platform/cros-ec-cec/cros-ec-cec.c
index 7bc4d8a9af28..1f35770245d1 100644
--- a/drivers/media/platform/cros-ec-cec/cros-ec-cec.c
+++ b/drivers/media/platform/cros-ec-cec/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
next prev parent reply other threads:[~2022-11-01 11:38 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-01 11:31 [PATCH AUTOSEL 4.19 1/6] media: s5p_cec: limit msg.len to CEC_MAX_MSG_SIZE Sasha Levin
2022-11-01 11:31 ` Sasha Levin [this message]
2022-11-01 11:31 ` [PATCH AUTOSEL 4.19 3/6] media: dvb-frontends/drxk: initialize err to 0 Sasha Levin
2022-11-01 11:31 ` [PATCH AUTOSEL 4.19 4/6] hwrng: bcm2835 - use hwrng_msleep() instead of cpu_relax() Sasha Levin
2022-11-01 11:31 ` [PATCH AUTOSEL 4.19 5/6] HID: saitek: add madcatz variant of MMO7 mouse device ID Sasha Levin
2022-11-01 11:31 ` [PATCH AUTOSEL 4.19 6/6] i2c: xiic: Add platform module alias Sasha Levin
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