[FFmpeg-cvslog] avformat/aaxdec: Check that segments table has been initialized

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Sun Jan 31 22:05:18 2021 +0100| [4e7dbca74c1395082947bb1586c1da47f50b1d18] | committer: Michael Niedermayer

avformat/aaxdec: Check that segments table has been initialized

Fixes: Timeout
Fixes: 29766/clusterfuzz-testcase-minimized-ffmpeg_dem_AAX_fuzzer-5635887566290944

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=4e7dbca74c1395082947bb1586c1da47f50b1d18
---

 libavformat/aaxdec.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libavformat/aaxdec.c b/libavformat/aaxdec.c
index 7d10e805ca..c6d2d1c8d1 100644
--- a/libavformat/aaxdec.c
+++ b/libavformat/aaxdec.c
@@ -264,6 +264,11 @@ static int aax_read_header(AVFormatContext *s)
         }
     }
 
+    if (!a->segments[0].end) {
+        ret = AVERROR_INVALIDDATA;
+        goto fail;
+    }
+
     st = avformat_new_stream(s, NULL);
     if (!st) {
         ret = AVERROR(ENOMEM);