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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-10-31 13:51:47 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-11-04 23:38:36 +0100 |
| commit | 442d53f409c8d84c7db120227caac00af54aa884 (patch) | |
| tree | 00a5c391022334d67f7f4b0f1e4bc6595b9bc892 | |
| parent | f291cd681b1235e150464ad83974d60d6879b492 (diff) | |
| download | ffmpeg-442d53f409c8d84c7db120227caac00af54aa884.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>
| -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 7dab5f377d..144b4172af 100644 --- a/libavformat/bintext.c +++ b/libavformat/bintext.c @@ -344,6 +344,8 @@ 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->codecpar->width < 8) + return AVERROR_INVALIDDATA; if (!bin->width) calculate_height(st->codecpar, bin->fsize); avio_seek(pb, 12, SEEK_SET); |