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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-15 22:00:46 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-16 18:41:10 +0200 |
| commit | 737e6bf2162b89d396f4d477bfe8c99f1dd885de (patch) | |
| tree | b6ef5fc638693e4054865ff499b01f4f14fe67b2 /libavformat/mvdec.c | |
| parent | f624c92d4c6fa73dfa95959d886090af6790bc36 (diff) | |
| download | ffmpeg-737e6bf2162b89d396f4d477bfe8c99f1dd885de.tar.gz | |
avformat/mvdec: Do not set invalid sample rate
Fixes: signed integer overflow: -682581959642593728 * 16 cannot be represented in type 'long'
Fixes: 37883/clusterfuzz-testcase-minimized-ffmpeg_dem_MV_fuzzer-5311691517198336
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavformat/mvdec.c')
| -rw-r--r-- | libavformat/mvdec.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/libavformat/mvdec.c b/libavformat/mvdec.c index b1450e08da..7573087c7c 100644 --- a/libavformat/mvdec.c +++ b/libavformat/mvdec.c @@ -156,9 +156,10 @@ static int parse_audio_var(AVFormatContext *avctx, AVStream *st, } else if (!strcmp(name, "NUM_CHANNELS")) { return set_channels(avctx, st, var_read_int(pb, size)); } else if (!strcmp(name, "SAMPLE_RATE")) { - st->codecpar->sample_rate = var_read_int(pb, size); - if (st->codecpar->sample_rate <= 0) + int sample_rate = var_read_int(pb, size); + if (sample_rate <= 0) return AVERROR_INVALIDDATA; + st->codecpar->sample_rate = sample_rate; avpriv_set_pts_info(st, 33, 1, st->codecpar->sample_rate); } else if (!strcmp(name, "SAMPLE_WIDTH")) { uint64_t bpc = var_read_int(pb, size) * (uint64_t)8; |