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avformat/mov: Fix integer overflow in FFABS

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Fixes: unknown_unknown_19e_414_cov_764838672_bellhamlam.mov

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 053e80f6ea)

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2015-09-03 09:20:23 +02:00
parent c09fe0346d
commit 79b16c6e5e
1 changed files with 1 additions and 1 deletions
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2
libavformat/mov.c
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@ -2083,7 +2083,7 @@ static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
av_dlog(c->fc, "count=%d, duration=%d\n",
count, duration);
if (FFABS(duration) > (1<<28) && i+2<entries) {
if (FFNABS(duration) < -(1<<28) && i+2<entries) {
av_log(c->fc, AV_LOG_WARNING, "CTTS invalid\n");
av_freep(&sc->ctts_data);
sc->ctts_count = 0;