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55 lines
2.1 KiB
Diff
55 lines
2.1 KiB
Diff
From 3a4ebaac557a9e3fbcbab4561650abac8298a4d9 Mon Sep 17 00:00:00 2001
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From: Satish Kodishala <skodisha@codeaurora.org>
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Date: Thu, 10 Oct 2013 15:44:11 +0530
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Subject: radio: iris: Checking if driver's buffer is large enough.
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Checking if driver's buffer is large enough to copy
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the data from user space.
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Change-Id: I7b4eed81cf77ce2973669ce18ccd95a5df397d82
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CRs-fixed: 552329
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Signed-off-by: Satish Kodishala <skodisha@codeaurora.org>
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---
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drivers/media/radio/radio-iris.c | 23 ++++++++++++++++++-----
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1 file changed, 18 insertions(+), 5 deletions(-)
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diff --git a/drivers/media/radio/radio-iris.c b/drivers/media/radio/radio-iris.c
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index 5e056be..a9e25bd 100644
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--- a/drivers/media/radio/radio-iris.c
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+++ b/drivers/media/radio/radio-iris.c
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@@ -3472,13 +3472,26 @@ static int iris_vidioc_s_ctrl(struct file *file, void *priv,
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radio->riva_data_req.cmd_params.start_addr = ctrl->value;
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break;
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case V4L2_CID_PRIVATE_IRIS_RIVA_ACCS_LEN:
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- radio->riva_data_req.cmd_params.length = ctrl->value;
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+ if ((ctrl->value > 0) &&
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+ (ctrl->value <= MAX_RIVA_PEEK_RSP_SIZE)) {
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+ radio->riva_data_req.cmd_params.length = ctrl->value;
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+ } else {
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+ FMDERR("Length %d is more than the buffer size %d\n",
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+ ctrl->value, MAX_RIVA_PEEK_RSP_SIZE);
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+ retval = -EINVAL;
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+ }
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break;
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case V4L2_CID_PRIVATE_IRIS_RIVA_POKE:
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- memcpy(radio->riva_data_req.data, (void *)ctrl->value,
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- radio->riva_data_req.cmd_params.length);
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- radio->riva_data_req.cmd_params.subopcode = RIVA_POKE_OPCODE;
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- retval = hci_poke_data(&radio->riva_data_req , radio->fm_hdev);
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+ if (radio->riva_data_req.cmd_params.length <= MAX_RIVA_PEEK_RSP_SIZE) {
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+ memcpy(radio->riva_data_req.data, (void *)ctrl->value,
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+ radio->riva_data_req.cmd_params.length);
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+ radio->riva_data_req.cmd_params.subopcode = RIVA_POKE_OPCODE;
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+ retval = hci_poke_data(&radio->riva_data_req , radio->fm_hdev);
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+ } else {
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+ FMDERR("Can not copy into driver's buffer. Length %d is more than"
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+ "the buffer size %d\n", ctrl->value, MAX_RIVA_PEEK_RSP_SIZE);
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+ retval = -EINVAL;
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+ }
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break;
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case V4L2_CID_PRIVATE_IRIS_SSBI_ACCS_ADDR:
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radio->ssbi_data_accs.start_addr = ctrl->value;
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--
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cgit v1.1
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