diff options
| author | Michael Niedermayer <[email protected]> | 2020-10-31 13:51:47 +0100 |
|---|---|---|
| committer | Michael Niedermayer <[email protected]> | 2021-02-02 14:18:21 +0100 |
| commit | 14e4f69fbae70048dfacb48d2bd3a7837a55242a (patch) | |
| tree | 0bca78e729c5d2f4141fd7d345a2f81a6f383f6b | |
| parent | 4a6325c69ca2200f02ab7d0b4efaa8df46c60f9e (diff) | |
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 <[email protected]>
(cherry picked from commit 442d53f409c8d84c7db120227caac00af54aa884)
Signed-off-by: Michael Niedermayer <[email protected]>
| -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); |