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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-04-23 19:33:58 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-08 21:31:50 +0200 |
| commit | 6d86416c92c127de23f5d62fa5d40cf3613c4b14 (patch) | |
| tree | 0bbedcd7e15aa76a62aa93f73c242f4b0e49aa0a | |
| parent | f89b52fbca6fb162a3dfb5d7c36164fd10242448 (diff) | |
| download | ffmpeg-6d86416c92c127de23f5d62fa5d40cf3613c4b14.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 2dab986f3a..f9e0bb2e30 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); |