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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-12-23 20:36:16 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-12-30 22:20:14 +0100 |
| commit | c217ca7718c8e24905d7ba9ede719ae040899476 (patch) | |
| tree | 273b1bc3b114625de383caa660ee163caba96a02 | |
| parent | 68f8292aa96d99b733ca7d2e56b584b00263db84 (diff) | |
| download | ffmpeg-c217ca7718c8e24905d7ba9ede719ae040899476.tar.gz | |
avformat/flvdec: timestamps cannot use the full int64 range
We do not support this as we multiply by 1000
Fixes: signed integer overflow: -45318575073853696 * 1000 cannot be represented in type 'long'
Fixes: 42804/clusterfuzz-testcase-minimized-ffmpeg_dem_LIVE_FLV_fuzzer-4630325425209344
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/flvdec.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c index 44a7e5f93c..b9e36b3ff1 100644 --- a/libavformat/flvdec.c +++ b/libavformat/flvdec.c @@ -461,6 +461,8 @@ static int parse_keyframes_index(AVFormatContext *s, AVIOContext *ioc, int64_t m d = av_int2double(avio_rb64(ioc)); if (isnan(d) || d < INT64_MIN || d > INT64_MAX) goto invalid; + if (current_array == × && (d <= INT64_MIN / 1000 || d >= INT64_MAX / 1000)) + goto invalid; current_array[0][i] = d; } if (times && filepositions) { |