Fixes: signed integer overflow: 2048 * 1122336 cannot be represented in type 'int' Fixes: 29102/clusterfuzz-testcase-minimized-ffmpeg_dem_MSF_fuzzer-6726959600107520
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavformat/msf.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/msf.c b/libavformat/msf.c index 155f488e44..1eaed54357 100644 --- a/libavformat/msf.c +++ b/libavformat/msf.c @@ -70,6 +70,8 @@ static int msf_read_header(AVFormatContext *s) case 4: case 5: case 6: st->codecpar->block_align = (codec == 4 ? 96 : codec == 5 ? 152 : 192) * st->codecpar->channels; + if (st->codecpar->channels > UINT16_MAX / 2048) + return AVERROR_INVALIDDATA; ret = ff_alloc_extradata(st->codecpar, 14); if (ret < 0) return ret; -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
