[FFmpeg-devel] [PATCH] avformat/aaxdec: Check for empty segments

[Michael Niedermayer]

Fixes: Timeout
Fixes: 48154/clusterfuzz-testcase-minimized-ffmpeg_dem_AAX_fuzzer-5149094353436672

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
 libavformat/aaxdec.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavformat/aaxdec.c b/libavformat/aaxdec.c
index dd1fbde736..bcbff216db 100644
--- a/libavformat/aaxdec.c
+++ b/libavformat/aaxdec.c
@@ -252,6 +252,8 @@ static int aax_read_header(AVFormatContext *s)
                 size  = avio_rb32(pb);
                 a->segments[r].start = start + a->data_offset;
                 a->segments[r].end   = a->segments[r].start + size;
+                if (!size)
+                    return AVERROR_INVALIDDATA;
                 if (r &&
                     a->segments[r].start < a->segments[r-1].end &&
                     a->segments[r].end   > a->segments[r-1].start)
-- 
2.17.1