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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-07-04 23:32:40 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-10-21 22:19:37 +0200 |
| commit | 3df3d2cfe7895c95e81a79ceaf8ef53bef6b3159 (patch) | |
| tree | f1788186aef76a517164597c84aebb6dabad94e9 | |
| parent | f3ac9f6f6948d194ca404145dad03f26113b09a1 (diff) | |
| download | ffmpeg-3df3d2cfe7895c95e81a79ceaf8ef53bef6b3159.tar.gz | |
avformat/iff: simplify duration calculation
Fixes: signed integer overflow: 315680096256 * 134215943 cannot be represented in type 'long long'
Fixes: 48713/clusterfuzz-testcase-minimized-ffmpeg_dem_IFF_fuzzer-5886272312311808
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 0740641e932551342cc1737d981e950ecffa3b63)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/iff.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/libavformat/iff.c b/libavformat/iff.c index 7f2484b030..e66292c785 100644 --- a/libavformat/iff.c +++ b/libavformat/iff.c @@ -384,7 +384,7 @@ static int read_dst_frame(AVFormatContext *s, AVPacket *pkt) avio_skip(pb, 1); pkt->flags |= AV_PKT_FLAG_KEY; pkt->stream_index = 0; - pkt->duration = 588LL * s->streams[0]->codecpar->sample_rate / 44100; + pkt->duration = s->streams[0]->codecpar->sample_rate / 75; pkt->pos = chunk_pos; chunk_pos = avio_tell(pb); @@ -397,7 +397,8 @@ static int read_dst_frame(AVFormatContext *s, AVPacket *pkt) case ID_FRTE: if (data_size < 4) return AVERROR_INVALIDDATA; - s->streams[0]->duration = avio_rb32(pb) * 588LL * s->streams[0]->codecpar->sample_rate / 44100; + s->streams[0]->duration = avio_rb32(pb) * (uint64_t)s->streams[0]->codecpar->sample_rate / 75; + break; } |