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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-11-10 00:04:50 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-11-11 17:05:24 +0100 |
| commit | 9ef60a66f1f155605049402415bd901c8baf1a24 (patch) | |
| tree | 4e9ef84d97770f848fb35862edd857c31984a5fb | |
| parent | a876bc9c17e4d50e8cb9033c78300944adb6231a (diff) | |
| download | ffmpeg-9ef60a66f1f155605049402415bd901c8baf1a24.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>
| -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 4d6ae7abc5..f56eb9ff59 100644 --- a/libavformat/sbgdec.c +++ b/libavformat/sbgdec.c @@ -1416,6 +1416,11 @@ 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); |