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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-10-31 13:51:47 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-10-17 21:34:53 +0200 |
| commit | d5c4d054822601e6bb57b12bfe69686d042dc792 (patch) | |
| tree | df5341750f73bc0673611dc5b200e4354dd2075d | |
| parent | 57d6ff94f00cb0359098cacc138c9fb04a1d8af2 (diff) | |
| download | ffmpeg-d5c4d054822601e6bb57b12bfe69686d042dc792.tar.gz | |
avformat/bintext: Check width in idf_read_header()
Fixes: division by 0
Fixes: 26802/clusterfuzz-testcase-minimized-ffmpeg_dem_IDF_fuzzer-5180591554953216.fuzz
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 442d53f409c8d84c7db120227caac00af54aa884)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/bintext.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavformat/bintext.c b/libavformat/bintext.c index e339fef35f..58ff33533b 100644 --- a/libavformat/bintext.c +++ b/libavformat/bintext.c @@ -295,6 +295,8 @@ static int idf_read_header(AVFormatContext *s) bin->fsize = avio_size(pb) - 12 - 4096 - 48; ff_sauce_read(s, &bin->fsize, &got_width, 0); + if (st->codec->width < 8) + return AVERROR_INVALIDDATA; if (!bin->width) calculate_height(st->codec, bin->fsize); avio_seek(pb, 12, SEEK_SET); |