From f377e8cb050a917d04fcfd7517ead3c2782ec768 Mon Sep 17 00:00:00 2001
From: Harish Mahendrakar <harish.mahendrakar@ittiam.com>
Date: Wed, 26 Aug 2015 16:17:55 +0530
Subject: [PATCH] Decoder: Memset 8 extra bytes at the end of internal
 bitstream buffer

Decoder may read 8 extra bytes at the end of this buffer, though it will never be used
Setting it to zero will ensure unitialized reads are avoided

Change-Id: I724239861cb9fa64f3a70cb5450e094cb3afa20c
---
 decoder/ih264d_api.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/decoder/ih264d_api.c b/decoder/ih264d_api.c
index ddbf769..fc21a06 100644
--- a/decoder/ih264d_api.c
+++ b/decoder/ih264d_api.c
@@ -1955,6 +1955,11 @@ WORD32 ih264d_video_decode(iv_obj_t *dec_hdl, void *pv_api_ip, void *pv_api_op)
         {
             memcpy(pu1_bitstrm_buf, pu1_buf + u4_length_of_start_code,
                    buflen);
+            /* Decoder may read extra 8 bytes near end of the frame */
+            if((buflen + 8) < buf_size)
+            {
+                memset(pu1_bitstrm_buf + buflen, 0, 8);
+            }
             u4_first_start_code_found = 1;
 
         }