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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-04-23 19:33:58 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-09 13:54:52 +0200 |
| commit | 8cacdaf8197222a04ce40c37b2f56c4516cb1a92 (patch) | |
| tree | 0d7b076d694f8c18eebce7e44ebedcb3bf0889d5 | |
| parent | a7c6df6df0ef1b5fdc92ebb395ac11b82b66eb6f (diff) | |
| download | ffmpeg-8cacdaf8197222a04ce40c37b2f56c4516cb1a92.tar.gz | |
avformat/bfi: check nframes
Fixes: signed integer overflow: -2147483648 - 1 cannot be represented in type 'int'
Fixes: 29102/clusterfuzz-testcase-minimized-ffmpeg_dem_BFI_fuzzer-6737028768202752
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 b4e77dfca1c2970446f79277034d8e60c3fe3f4e)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/bfi.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavformat/bfi.c b/libavformat/bfi.c index 9d88533acf..f32a2cf8ce 100644 --- a/libavformat/bfi.c +++ b/libavformat/bfi.c @@ -73,6 +73,8 @@ static int bfi_read_header(AVFormatContext * s) return AVERROR_INVALIDDATA; bfi->nframes = avio_rl32(pb); + if (bfi->nframes < 0) + return AVERROR_INVALIDDATA; avio_rl32(pb); avio_rl32(pb); avio_rl32(pb); |