[FFmpeg-cvslog] avformat/mp3dec: avoid seeking to negative positions

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Tue Nov 18 04:04:37 2014 +0100| [0b75b6c3cd2cb4775729bf019c25c4792a2729d4] | committer: Michael Niedermayer

avformat/mp3dec: avoid seeking to negative positions

Fixes Ticket4038

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=0b75b6c3cd2cb4775729bf019c25c4792a2729d4
---

 libavformat/mp3dec.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavformat/mp3dec.c b/libavformat/mp3dec.c
index 8208dbb..c4c1bb7 100644
--- a/libavformat/mp3dec.c
+++ b/libavformat/mp3dec.c
@@ -457,6 +457,10 @@ static int mp3_seek(AVFormatContext *s, int stream_index, int64_t timestamp,
         int64_t pos = ie->pos + (dir > 0 ? i - 1024 : -i);
         int64_t candidate = -1;
         int score = 999;
+
+        if (pos < 0)
+            continue;
+
         for(j=0; j<MIN_VALID; j++) {
             ret = check(s, pos);
             if(ret < 0)