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demux_mkv: reject 0 TimecodeScale

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Also reject anything over INT_MAX; no particular reason for this upper
bound.

Fixes #1317.
This commit is contained in:
wm4
2014-12-08 00:04:27 +01:00
committed by Alessandro Ghedini
parent 115709e3c1
commit 7c53bb4bb1
1 changed files with 4 additions and 0 deletions
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demux/demux_mkv.c
+4
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@@ -345,6 +345,10 @@ static int demux_mkv_read_info(demuxer_t *demuxer)
if (info.n_timecode_scale) {
mkv_d->tc_scale = info.timecode_scale;
MP_VERBOSE(demuxer, "| + timecode scale: %" PRIu64 "\n", mkv_d->tc_scale);
if (mkv_d->tc_scale < 1 || mkv_d->tc_scale > INT_MAX) {
res = -1;
goto out;
}
}
if (info.n_duration) {
mkv_d->duration = info.duration * mkv_d->tc_scale / 1e9;