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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-11-10 00:04:50 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-02-02 14:18:21 +0100 |
| commit | a0c75b800fa98f2796a3867e600f910ced323ae5 (patch) | |
| tree | 519ef403d2d57f46609c82315e4d6d5cb973f3fb | |
| parent | 04f802e729e224e9a4c831b64e9d27c87c25cfb6 (diff) | |
| download | ffmpeg-a0c75b800fa98f2796a3867e600f910ced323ae5.tar.gz | |
avformat/sbgdec: Check that end is not before start
Fixes: signed integer overflow: -9223372036854775808 + -5279949906739200 cannot be represented in type 'long'
Fixes: 26908/clusterfuzz-testcase-minimized-ffmpeg_dem_SBG_fuzzer-6329610851319808
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 9ef60a66f1f155605049402415bd901c8baf1a24)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/sbgdec.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavformat/sbgdec.c b/libavformat/sbgdec.c index ae2e0a0d02..924a6d979c 100644 --- a/libavformat/sbgdec.c +++ b/libavformat/sbgdec.c @@ -1414,6 +1414,11 @@ static av_cold int sbg_read_header(AVFormatContext *avf) if (r < 0) goto fail; + if (script.end_ts != AV_NOPTS_VALUE && script.end_ts < script.start_ts) { + r = AVERROR_INVALIDDATA; + goto fail; + } + st = avformat_new_stream(avf, NULL); if (!st) return AVERROR(ENOMEM); |