From 640a2427aafa774b83316b7a8c5c2bdc28bfd269 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Storsj=C3=B6?= <martin@martin.st>
Date: Sat, 28 Sep 2013 23:46:04 +0300
Subject: bfi: Add some very basic sanity checks for input packet sizes
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CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
---
libavformat/bfi.c | 4 ++++
1 file changed, 4 insertions(+)
(limited to 'libavformat')
diff --git a/libavformat/bfi.c b/libavformat/bfi.c
index 5d7ccb85e6..19060e760f 100644
--- a/libavformat/bfi.c
+++ b/libavformat/bfi.c
@@ -132,6 +132,10 @@ static int bfi_read_packet(AVFormatContext * s, AVPacket * pkt)
video_offset = avio_rl32(pb);
audio_size = video_offset - audio_offset;
bfi->video_size = chunk_size - video_offset;
+ if (audio_size < 0 || bfi->video_size < 0) {
+ av_log(s, AV_LOG_ERROR, "Invalid audio/video offsets or chunk size\n");
+ return AVERROR_INVALIDDATA;
+ }
//Tossing an audio packet at the audio decoder.
ret = av_get_packet(pb, pkt, audio_size);
--
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