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61 lines
2.3 KiB
Diff
61 lines
2.3 KiB
Diff
From 64b7bc25e019dd07e8042e0a6ec6dc6a1dd0c385 Mon Sep 17 00:00:00 2001
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From: Pratap Nirujogi <pratapn@codeaurora.org>
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Date: Mon, 20 Feb 2017 17:29:33 +0530
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Subject: msm: camera: cpp: Fixing Heap overflow in output buffer
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Issue:
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Missing bound check when writing into the output array
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buffer, which can lead to out-of-bound heap write.
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Fix:
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Addding hardcoded constant 8 in the MSM_OUTPUT_BUF_CNT
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macro and size check to the place where the array is
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accessed. Returning '0' if exceeds MSM_OUTPUT_BUF_CNT.
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Caller will return -EINVAL for '0'.
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Change-Id: Ic03f86e3e47ece9ca7069527e741a75ad9a0f83f
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CRs-Fixed: 2004036
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Signed-off-by: Pratap Nirujogi <pratapn@codeaurora.org>
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---
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drivers/media/platform/msm/camera_v2/pproc/cpp/msm_cpp.c | 2 ++
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include/uapi/media/msmb_pproc.h | 3 ++-
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2 files changed, 4 insertions(+), 1 deletion(-)
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diff --git a/drivers/media/platform/msm/camera_v2/pproc/cpp/msm_cpp.c b/drivers/media/platform/msm/camera_v2/pproc/cpp/msm_cpp.c
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index e35a744..19d9bbb 100644
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--- a/drivers/media/platform/msm/camera_v2/pproc/cpp/msm_cpp.c
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+++ b/drivers/media/platform/msm/camera_v2/pproc/cpp/msm_cpp.c
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@@ -2045,6 +2045,8 @@ static int msm_cpp_check_buf_type(struct msm_buf_mngr_info *buff_mgr_info,
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/* More or equal bufs as Input buffer */
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num_output_bufs = new_frame->batch_info.batch_size;
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}
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+ if (num_output_bufs > MSM_OUTPUT_BUF_CNT)
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+ return 0;
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for (i = 0; i < num_output_bufs; i++) {
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new_frame->output_buffer_info[i].index =
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buff_mgr_info->user_buf.buf_idx[i];
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diff --git a/include/uapi/media/msmb_pproc.h b/include/uapi/media/msmb_pproc.h
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index b65669b..8f45457 100644
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--- a/include/uapi/media/msmb_pproc.h
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+++ b/include/uapi/media/msmb_pproc.h
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@@ -16,6 +16,7 @@
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#define MSM_CPP_MAX_FRAME_LENGTH 4096
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#define MSM_CPP_MAX_FW_NAME_LEN 32
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#define MAX_FREQ_TBL 10
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+#define MSM_OUTPUT_BUF_CNT 8
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enum msm_cpp_frame_type {
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MSM_CPP_OFFLINE_FRAME,
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@@ -76,7 +77,7 @@ struct msm_cpp_frame_info_t {
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uint32_t feature_mask;
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uint8_t we_disable;
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struct msm_cpp_buffer_info_t input_buffer_info;
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- struct msm_cpp_buffer_info_t output_buffer_info[8];
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+ struct msm_cpp_buffer_info_t output_buffer_info[MSM_OUTPUT_BUF_CNT];
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struct msm_cpp_buffer_info_t duplicate_buffer_info;
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struct msm_cpp_buffer_info_t tnr_scratch_buffer_info[2];
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uint32_t reserved;
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--
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cgit v1.1
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