Fixes: signed integer overflow: 19922944 * 1024 cannot be represented in type 'int' Fixes: 26402/clusterfuzz-testcase-minimized-ffmpeg_dem_VMD_fuzzer-5745470053548032
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavformat/genh.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/libavformat/genh.c b/libavformat/genh.c index 61adf49964..ed9910503d 100644 --- a/libavformat/genh.c +++ b/libavformat/genh.c @@ -87,7 +87,9 @@ static int genh_read_header(AVFormatContext *s) case 5: st->codecpar->codec_id = st->codecpar->block_align > 0 ? AV_CODEC_ID_PCM_S8_PLANAR : AV_CODEC_ID_PCM_S8; break; - case 6: st->codecpar->codec_id = AV_CODEC_ID_SDX2_DPCM; break; + case 6: if (st->codecpar->block_align > INT_MAX/1024) + return AVERROR_INVALIDDATA; + st->codecpar->codec_id = AV_CODEC_ID_SDX2_DPCM; break; case 7: ret = ff_alloc_extradata(st->codecpar, 2); 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".
