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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-01-17 00:07:29 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-02-02 14:18:21 +0100 |
| commit | fefb5d52ca2f106b8fbd45d79fc6e96607a19d26 (patch) | |
| tree | 86ba0559bad50a51a6fb577d9a1f98c8b30071e0 | |
| parent | 010898a6762e18be25997ccc4fdd8b28308c22f3 (diff) | |
| download | ffmpeg-fefb5d52ca2f106b8fbd45d79fc6e96607a19d26.tar.gz | |
avformat/sbgdec: Reduce the amount of floating point in str_to_time()
Fixes: 1e+75 is outside the range of representable values of type 'long'
Fixes: 26910/clusterfuzz-testcase-minimized-ffmpeg_dem_SBG_fuzzer-6626834808700928
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 ac6c8993f79eaefb76e1fdf0eef5373ab3a46a4e)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/sbgdec.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/libavformat/sbgdec.c b/libavformat/sbgdec.c index 924a6d979c..92dd1dc089 100644 --- a/libavformat/sbgdec.c +++ b/libavformat/sbgdec.c @@ -181,6 +181,7 @@ static int str_to_time(const char *str, int64_t *rtime) char *end; int hours, minutes; double seconds = 0; + int64_t ts = 0; if (*cur < '0' || *cur > '9') return 0; @@ -196,8 +197,9 @@ static int str_to_time(const char *str, int64_t *rtime) seconds = strtod(cur + 1, &end); if (end > cur + 1) cur = end; + ts = av_clipd(seconds * AV_TIME_BASE, INT64_MIN/2, INT64_MAX/2); } - *rtime = (hours * 3600LL + minutes * 60LL + seconds) * AV_TIME_BASE; + *rtime = (hours * 3600LL + minutes * 60LL) * AV_TIME_BASE + ts; return cur - str; } |