ffmpeg | branch: release/5.1 | Michael Niedermayer <mich...@niedermayer.cc> | Sat Sep 17 22:46:35 2022 +0200| [4038dfc1d13728f4c7cb6bc9eb44a03279aec7f4] | committer: Michael Niedermayer
avformat/genh: Check nb_channels for IMA ADPCM The check could be made more strict Fixes: signed integer overflow: 36 * 538976288 cannot be represented in type 'int' Fixes: 50993/clusterfuzz-testcase-minimized-ffmpeg_dem_GENH_fuzzer-6539389873815552 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit 0345a885455dea52fcc570b97f5dc5c75372a39c) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=4038dfc1d13728f4c7cb6bc9eb44a03279aec7f4 --- libavformat/genh.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/genh.c b/libavformat/genh.c index a25d4d625a..1f707b5555 100644 --- a/libavformat/genh.c +++ b/libavformat/genh.c @@ -78,6 +78,8 @@ static int genh_read_header(AVFormatContext *s) case 0: st->codecpar->codec_id = AV_CODEC_ID_ADPCM_PSX; break; case 1: case 11: st->codecpar->bits_per_coded_sample = 4; + if (st->codecpar->ch_layout.nb_channels > INT_MAX / 36) + return AVERROR_INVALIDDATA; st->codecpar->block_align = 36 * st->codecpar->ch_layout.nb_channels; st->codecpar->codec_id = AV_CODEC_ID_ADPCM_IMA_WAV; break; case 2: st->codecpar->codec_id = AV_CODEC_ID_ADPCM_DTK; break; _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
