[FFmpeg-devel] [PATCH] avformat/mov: sanity check count in IPRP

[Michael Niedermayer]

Fixes: Timeout
Fixes: 69230/clusterfuzz-testcase-minimized-ffmpeg_IO_DEMUXER_fuzzer-6540512101203968

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

diff --git a/libavformat/mov.c b/libavformat/mov.c
index ce95842ce58..9042753d221 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -8925,6 +8925,11 @@ static int mov_read_iprp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
     flags   = avio_rb24(pb);
     count   = avio_rb32(pb);
 
+    if (count * 5LL > a.size) {
+        ret = AVERROR_INVALIDDATA;
+        goto fail;
+    }
+
     for (int i = 0; i < count; i++) {
         int item_id = version ? avio_rb32(pb) : avio_rb16(pb);
         int assoc_count = avio_r8(pb);
-- 
2.45.2