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authorMichael Niedermayer <michael@niedermayer.cc>2021-02-06 21:54:31 +0100
committerMichael Niedermayer <michael@niedermayer.cc>2021-02-14 19:55:02 +0100
commitcb90e1c4d03414b9abc765ab0b91d87a9278fb73 (patch)
tree260e00b0678c4a59af3b584635cfb8fa5c3bef6b /libavformat/mov.c
parent505d6ed4756a68707c26e416646228d5ed31c0f5 (diff)
downloadffmpeg-cb90e1c4d03414b9abc765ab0b91d87a9278fb73.tar.gz
avformat/mov: sanity check STSD entries
The choosen value is arbitrary. I am not sure if this is a good idea but i dont immedeately see an alternative better way, it seems either an arbitrary limit or OOM Fixes: OOM Fixes: 27492/clusterfuzz-testcase-minimized-ffmpeg_dem_MOV_fuzzer-6194970578649088 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavformat/mov.c')
-rw-r--r--libavformat/mov.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/mov.c b/libavformat/mov.c
index 2fd1f2cd8f..9ca0a3ee15 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -2605,7 +2605,7 @@ static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
entries = avio_rb32(pb);
/* Each entry contains a size (4 bytes) and format (4 bytes). */
- if (entries <= 0 || entries > atom.size / 8) {
+ if (entries <= 0 || entries > atom.size / 8 || entries > 1024) {
av_log(c->fc, AV_LOG_ERROR, "invalid STSD entries %d\n", entries);
return AVERROR_INVALIDDATA;
}