[FFmpeg-cvslog] avformat/oggdec: Check for EOF after page header

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Wed Apr  1 20:58:52 2020 +0200| [f1589be9fda00c417f9bcccb55dbbea998ee08ac] | committer: Michael Niedermayer

avformat/oggdec: Check for EOF after page header

Fixes: Infinite loop
Fixes: Ticket8594

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f1589be9fda00c417f9bcccb55dbbea998ee08ac
---

 libavformat/oggdec.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavformat/oggdec.c b/libavformat/oggdec.c
index de2f24b967..95190589ab 100644
--- a/libavformat/oggdec.c
+++ b/libavformat/oggdec.c
@@ -389,6 +389,9 @@ static int ogg_read_page(AVFormatContext *s, int *sid)
     avio_skip(bc, 8); /* seq, crc */
     nsegs  = avio_r8(bc);
 
+    if (avio_feof(bc))
+        return AVERROR_EOF;
+
     idx = ogg_find_stream(ogg, serial);
     if (idx < 0) {
         if (data_packets_seen(ogg))