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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-17 22:48:43 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-26 17:51:00 +0300 |
| commit | 650f0f97dbd32cfcb1f620dfc9689c6329fef621 (patch) | |
| tree | 246ba2a09e75fc94058661902e4c48a99689a49d | |
| parent | bf9ac33cffd8182700812052b7c1953e07fdcecb (diff) | |
avformat/cafdec: Check that nb_frasmes fits within 64bit
Fixes: signed integer overflow: 1099511693312 * 538976288 cannot be represented in type 'long'
Fixes: 50993/clusterfuzz-testcase-minimized-ffmpeg_dem_CAF_fuzzer-6565048815845376
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit d4bb4e375975dc0d31d5309106cf6ee0ed75140f)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/cafdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/cafdec.c b/libavformat/cafdec.c index 5c22678a38..0f3881bea1 100644 --- a/libavformat/cafdec.c +++ b/libavformat/cafdec.c @@ -342,7 +342,7 @@ static int read_header(AVFormatContext *s) found_data: if (caf->bytes_per_packet > 0 && caf->frames_per_packet > 0) { - if (caf->data_size > 0) + if (caf->data_size > 0 && caf->data_size / caf->bytes_per_packet < INT64_MAX / caf->frames_per_packet) st->nb_frames = (caf->data_size / caf->bytes_per_packet) * caf->frames_per_packet; } else if (st->nb_index_entries && st->duration > 0) { if (st->codecpar->sample_rate && caf->data_size / st->duration > INT64_MAX / st->codecpar->sample_rate / 8) { |