ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Sat Jun 21 02:01:22 2025 +0200| [5b1301004bdade13e3fee22081459e339ddd2637] | committer: Michael Niedermayer
avformat/iff: Check nb_channels == 0 in CHNL Fixes: division by 0 Fixes: 418396712/clusterfuzz-testcase-minimized-ffmpeg_dem_IFF_fuzzer-6104388018176000 Fixes: 418478219/clusterfuzz-testcase-minimized-ffmpeg_dem_IFF_fuzzer-4569544410857472 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Peter Ross <pr...@xvid.org> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=5b1301004bdade13e3fee22081459e339ddd2637 --- libavformat/iff.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/iff.c b/libavformat/iff.c index 9402be48c9..4ff10beb38 100644 --- a/libavformat/iff.c +++ b/libavformat/iff.c @@ -284,7 +284,7 @@ static int parse_dsd_prop(AVFormatContext *s, AVStream *st, uint64_t eof) return AVERROR_INVALIDDATA; st->codecpar->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC; st->codecpar->ch_layout.nb_channels = avio_rb16(pb); - if (size < 2 + st->codecpar->ch_layout.nb_channels * 4) + if (size < 2 + st->codecpar->ch_layout.nb_channels * 4 || !st->codecpar->ch_layout.nb_channels) return AVERROR_INVALIDDATA; if (st->codecpar->ch_layout.nb_channels > FF_ARRAY_ELEMS(dsd_layout)) { avpriv_request_sample(s, "channel layout"); _______________________________________________ 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".
