[FFmpeg-devel] [PATCH 5/6] avformat/bintext: Check width
Michael Niedermayer
michael at niedermayer.cc
Sun Nov 1 00:46:32 EET 2020
Fixes: division by 0
Fixes: 26780/clusterfuzz-testcase-minimized-ffmpeg_dem_ADF_fuzzer-5117945027756032
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
libavformat/bintext.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libavformat/bintext.c b/libavformat/bintext.c
index 7dab5f377d..810d870637 100644
--- a/libavformat/bintext.c
+++ b/libavformat/bintext.c
@@ -293,6 +293,8 @@ static int adf_read_header(AVFormatContext *s)
bin->fsize = avio_size(pb) - 1 - 192 - 4096;
st->codecpar->width = 80<<3;
ff_sauce_read(s, &bin->fsize, &got_width, 0);
+ if (st->codecpar->width < 8)
+ return AVERROR_INVALIDDATA;
if (!bin->width)
calculate_height(st->codecpar, bin->fsize);
avio_seek(pb, 1 + 192 + 4096, SEEK_SET);
--
2.17.1
More information about the ffmpeg-devel
mailing list