ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Tue Mar 26 00:45:09 2024 +0100| [75317ec4420d9853526291e8aa18f3ea17321525] | committer: Michael Niedermayer
avformat/wavdec: sanity check channels and bps before using them for block_align Fixes: 62276/clusterfuzz-testcase-minimized-ffmpeg_dem_W64_fuzzer-4704044498944000 Fixes: signed integer overflow: 520464 * 8224 cannot be represented in type 'int' Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=75317ec4420d9853526291e8aa18f3ea17321525 --- libavformat/wavdec.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/libavformat/wavdec.c b/libavformat/wavdec.c index 668c8adc36..89855670d9 100644 --- a/libavformat/wavdec.c +++ b/libavformat/wavdec.c @@ -34,6 +34,7 @@ #include "libavutil/log.h" #include "libavutil/mathematics.h" #include "libavutil/opt.h" +#include "libavcodec/internal.h" #include "avformat.h" #include "avio.h" #include "avio_internal.h" @@ -908,7 +909,9 @@ static int w64_read_header(AVFormatContext *s) if (ret < 0) return ret; avio_skip(pb, FFALIGN(size, INT64_C(8)) - size); - if (st->codecpar->block_align) { + if (st->codecpar->block_align && + st->codecpar->ch_layout.nb_channels < FF_SANE_NB_CHANNELS && + st->codecpar->bits_per_coded_sample < 128) { int block_align = st->codecpar->block_align; block_align = FFMAX(block_align, _______________________________________________ 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".
