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lavf/mov.c: Avoid heap allocation wraps in mov_read_{senc,saiz}()

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Core of patch is from paul@paulmehta.com
Reference https://crbug.com/643952 (senc,saiz portions)

Signed-off-by: Matt Wolenetz <wolenetz@chromium.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Matt Wolenetz 2016-12-14 15:27:49 -08:00 committed by Michael Niedermayer
parent 9bbdf5d921
commit 36aba43bd5
1 changed files with 7 additions and 2 deletions
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9
libavformat/mov.c
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@ -4968,8 +4968,8 @@ static int mov_read_senc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
avio_rb32(pb); /* entries */
if (atom.size < 8) {
av_log(c->fc, AV_LOG_ERROR, "senc atom size %"PRId64" too small\n", atom.size);
if (atom.size < 8 || atom.size > FFMIN(INT_MAX, SIZE_MAX)) {
av_log(c->fc, AV_LOG_ERROR, "senc atom size %"PRId64" invalid\n", atom.size);
return AVERROR_INVALIDDATA;
}
@ -5037,6 +5037,11 @@ static int mov_read_saiz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
return 0;
}
if (atom.size > FFMIN(INT_MAX, SIZE_MAX)) {
av_log(c->fc, AV_LOG_ERROR, "saiz atom auxiliary_info_sizes size %"PRId64" invalid\n", atom.size);
return AVERROR_INVALIDDATA;
}
/* save the auxiliary info sizes as is */
data_size = atom.size - atom_header_size;