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avformat/mov: Fix memleaks for duplicate STCO/CO64/STSC atoms

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Also see [FFmpeg-devel] [PATCH] avformat/mov: strengthen some table allocations
which contains more fixes but is unfinished

Fixes: signal_sigabrt_7ffff6ac7bb9_3484_cov_1830000177_starfox2.mov
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 1b5d11240692025f036e945bc37968735679320a)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-11-26 18:16:15 +01:00
parent d4c45f9249
commit 103cf56c62
1 changed files with 8 additions and 0 deletions
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8
libavformat/mov.c
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@ -1176,6 +1176,10 @@ static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
if (entries >= UINT_MAX/sizeof(int64_t))
return AVERROR_INVALIDDATA;
if (sc->chunk_offsets)
av_log(c->fc, AV_LOG_WARNING, "Duplicate STCO atom\n");
av_free(sc->chunk_offsets);
sc->chunk_count = 0;
sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
if (!sc->chunk_offsets)
return AVERROR(ENOMEM);
@ -1747,6 +1751,10 @@ static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
return 0;
if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
return AVERROR_INVALIDDATA;
if (sc->stsc_data)
av_log(c->fc, AV_LOG_WARNING, "Duplicate STSC atom\n");
av_free(sc->stsc_data);
sc->stsc_count = 0;
sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
if (!sc->stsc_data)
return AVERROR(ENOMEM);