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Merge commit 'd3cb302b88503c3111e25add196622110c056188'

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* commit 'd3cb302b88503c3111e25add196622110c056188':
  jpeg2000: Validate SOT parsing

Conflicts:
	libavcodec/jpeg2000dec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2013-07-03 13:20:57 +02:00
parent 838bd73139 d3cb302b88
commit 2e85737b0e
1 changed files with 8 additions and 6 deletions
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12
libavcodec/jpeg2000dec.c
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@@ -463,11 +463,12 @@ static int get_sot(Jpeg2000DecoderContext *s, int n)
if (bytestream2_get_bytes_left(&s->g) < 8) if (bytestream2_get_bytes_left(&s->g) < 8)
return AVERROR_INVALIDDATA; return AVERROR_INVALIDDATA;
s->curtileno = Isot = bytestream2_get_be16u(&s->g); // Isot
if ((unsigned)s->curtileno >= s->numXtiles * s->numYtiles) {
s->curtileno = 0; s->curtileno = 0;
Isot = bytestream2_get_be16u(&s->g); // Isot
if (Isot >= s->numXtiles * s->numYtiles)
return AVERROR_INVALIDDATA; return AVERROR_INVALIDDATA;
}
s->curtileno = Isot;
Psot = bytestream2_get_be32u(&s->g); // Psot Psot = bytestream2_get_be32u(&s->g); // Psot
TPsot = bytestream2_get_byteu(&s->g); // TPsot TPsot = bytestream2_get_byteu(&s->g); // TPsot
@@ -478,8 +479,9 @@ static int get_sot(Jpeg2000DecoderContext *s, int n)
av_log(s->avctx, AV_LOG_ERROR, "Psot %d too big\n", Psot); av_log(s->avctx, AV_LOG_ERROR, "Psot %d too big\n", Psot);
return AVERROR_INVALIDDATA; return AVERROR_INVALIDDATA;
} }
if (TPsot >= FF_ARRAY_ELEMS(s->tile[s->curtileno].tile_part)) {
av_log(s->avctx, AV_LOG_ERROR, "TPsot %d too big\n", TPsot); if (TPsot >= FF_ARRAY_ELEMS(s->tile[Isot].tile_part)) {
avpriv_request_sample(s->avctx, "Support for %d components", TPsot);
return AVERROR_PATCHWELCOME; return AVERROR_PATCHWELCOME;
} }