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, groeck@chromium.org,
ajye_huang@compal.corp-partner.google.com,
hellojacky0226@hotmail.com, zhuohao@chromium.org,
scott_chao@wistron.corp-partner.google.com,
linux-media@vger.kernel.org, chrome-platform@lists.linux.dev
Subject: [PATCH AUTOSEL 5.10 04/14] media: cros-ec-cec: limit msg.len to CEC_MAX_MSG_SIZE
Date: Tue, 1 Nov 2022 07:30:00 -0400 [thread overview]
Message-ID: <20221101113012.800271-4-sashal@kernel.org> (raw)
In-Reply-To: <20221101113012.800271-1-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/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 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);
--
2.35.1
next prev parent reply other threads:[~2022-11-01 11:35 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-01 11:29 [PATCH AUTOSEL 5.10 01/14] media: rkisp1: Initialize color space on resizer sink and source pads Sasha Levin
2022-11-01 11:29 ` [PATCH AUTOSEL 5.10 02/14] media: rkisp1: Zero v4l2_subdev_format fields in when validating links Sasha Levin
2022-11-01 11:29 ` [PATCH AUTOSEL 5.10 03/14] media: s5p_cec: limit msg.len to CEC_MAX_MSG_SIZE Sasha Levin
2022-11-01 11:30 ` Sasha Levin [this message]
2022-11-01 11:30 ` [PATCH AUTOSEL 5.10 05/14] media: dvb-frontends/drxk: initialize err to 0 Sasha Levin
2022-11-01 11:30 ` [PATCH AUTOSEL 5.10 06/14] media: meson: vdec: fix possible refcount leak in vdec_probe() Sasha Levin
2022-11-01 11:30 ` [PATCH AUTOSEL 5.10 07/14] media: atomisp: Ensure that USERPTR pointers are page aligned Sasha Levin
2022-11-01 11:30 ` [PATCH AUTOSEL 5.10 08/14] media: atomisp: Fix v4l2_fh resource leak on open errors Sasha Levin
2022-11-01 11:30 ` [PATCH AUTOSEL 5.10 09/14] ACPI: APEI: Fix integer overflow in ghes_estatus_pool_init() Sasha Levin
2022-11-01 11:30 ` [PATCH AUTOSEL 5.10 10/14] hwrng: bcm2835 - use hwrng_msleep() instead of cpu_relax() Sasha Levin
2022-11-01 11:30 ` [PATCH AUTOSEL 5.10 11/14] scsi: core: Restrict legal sdev_state transitions via sysfs Sasha Levin
2022-11-01 11:30 ` [PATCH AUTOSEL 5.10 12/14] HID: saitek: add madcatz variant of MMO7 mouse device ID Sasha Levin
2022-11-01 11:30 ` [PATCH AUTOSEL 5.10 13/14] drm/amdgpu: set vm_update_mode=0 as default for Sienna Cichlid in SRIOV case Sasha Levin
2022-11-01 11:30 ` [PATCH AUTOSEL 5.10 14/14] i2c: xiic: Add platform module alias Sasha Levin
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