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avformat/microdvddec: use 64bit for durations

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Fixes: signed integer overflow: 7 - -2147483647 cannot be represented in type 'int'
Fixes: 28036/clusterfuzz-testcase-minimized-ffmpeg_dem_MICRODVD_fuzzer-5171698751766528

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 f569ac4ce0)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-12-11 01:06:46 +01:00
parent 59652534dd
commit 897c1c990a
1 changed files with 2 additions and 2 deletions
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4
libavformat/microdvddec.c
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@ -65,12 +65,12 @@ static int64_t get_pts(const char *buf)
return AV_NOPTS_VALUE;
}
static int get_duration(const char *buf)
static int64_t get_duration(const char *buf)
{
int frame_start, frame_end;
if (sscanf(buf, "{%d}{%d}", &frame_start, &frame_end) == 2)
return frame_end - frame_start;
return frame_end - (int64_t)frame_start;
return -1;
}