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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-11-14 22:59:01 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-11-22 00:09:51 +0300 |
| commit | 8b50e8bc2975fad85e0713e05940ee9ecb5e8a18 (patch) | |
| tree | acb9a7ed07d0937808c739b5b087ef2e74c15b21 /libavformat/iff.c | |
| parent | ebf4bc629e6d0dbb4bb6725849bdd06456e4c8af (diff) | |
avformat/iff: Check size before skip
Fixes: Infinite loop
Fixes: 27292/clusterfuzz-testcase-minimized-ffmpeg_dem_IFF_fuzzer-5731168991051776
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/iff.c')
| -rw-r--r-- | libavformat/iff.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavformat/iff.c b/libavformat/iff.c index a70184f105..f017684620 100644 --- a/libavformat/iff.c +++ b/libavformat/iff.c @@ -259,6 +259,9 @@ static int parse_dsd_prop(AVFormatContext *s, AVStream *st, uint64_t eof) uint64_t size = avio_rb64(pb); uint64_t orig_pos = avio_tell(pb); + if (size >= INT64_MAX) + return AVERROR_INVALIDDATA; + switch(tag) { case MKTAG('A','B','S','S'): if (size < 8) |