1 files changed, 18 insertions, 8 deletions

diff --git a/libavcodec/opus_parser.c b/libavcodec/opus_parser.c
index d256fbb2d5..28b0933900 100644
--- a/libavcodec/opus_parser.c
+++ b/libavcodec/opus_parser.c
@@ -1,20 +1,20 @@
 /*
  * Copyright (c) 2013-2014 Mozilla Corporation
  *
- * This file is part of Libav.
+ * This file is part of FFmpeg.
  *
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
@@ -31,10 +31,10 @@
 #include "parser.h"
 
 typedef struct OpusParseContext {
+    ParseContext pc;
     OpusContext ctx;
     OpusPacket pkt;
     int extradata_parsed;
-    ParseContext pc;
     int ts_framing;
 } OpusParseContext;
 
@@ -43,6 +43,7 @@ static const uint8_t *parse_opus_ts_header(const uint8_t *start, int *payload_le
     const uint8_t *buf = start + 1;
     int start_trim_flag, end_trim_flag, control_extension_flag, control_extension_length;
     uint8_t flags;
+    uint64_t payload_len_tmp;
 
     GetByteContext gb;
     bytestream2_init(&gb, buf, buf_len);
@@ -52,11 +53,11 @@ static const uint8_t *parse_opus_ts_header(const uint8_t *start, int *payload_le
     end_trim_flag          = (flags >> 3) & 1;
     control_extension_flag = (flags >> 2) & 1;
 
-    *payload_len = 0;
+    payload_len_tmp = *payload_len = 0;
     while (bytestream2_peek_byte(&gb) == 0xff)
-        *payload_len += bytestream2_get_byte(&gb);
+        payload_len_tmp += bytestream2_get_byte(&gb);
 
-    *payload_len += bytestream2_get_byte(&gb);
+    payload_len_tmp += bytestream2_get_byte(&gb);
 
     if (start_trim_flag)
         bytestream2_skip(&gb, 2);
@@ -67,6 +68,11 @@ static const uint8_t *parse_opus_ts_header(const uint8_t *start, int *payload_le
         bytestream2_skip(&gb, control_extension_length);
     }
 
+    if (bytestream2_tell(&gb) + payload_len_tmp > buf_len)
+        return NULL;
+
+    *payload_len = payload_len_tmp;
+
     return buf + bytestream2_tell(&gb);
 }
 
@@ -104,6 +110,10 @@ static int opus_find_frame_end(AVCodecParserContext *ctx, AVCodecContext *avctx,
             state = (state << 8) | payload[i];
             if ((state & OPUS_TS_MASK) == OPUS_TS_HEADER) {
                 payload = parse_opus_ts_header(payload, &payload_len, buf_size - i);
+                if (!payload) {
+                    av_log(avctx, AV_LOG_ERROR, "Error parsing Ogg TS header.\n");
+                    return AVERROR_INVALIDDATA;
+                }
                 *header_len = payload - buf;
                 start_found = 1;
                 break;