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go2meeting: disallow tile dimensions that are not multiple of 16

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Original decoder seems to always use 176x128 tiles anyway and this helps
avoiding lots of issues with odd tile sizes in fuzzed files.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Kostya Shishkov 2013-11-29 09:15:00 +01:00 committed by Anton Khirnov
parent e026ee0446
commit 01f6df01b6
1 changed files with 2 additions and 1 deletions
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3
libavcodec/g2meet.c
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@ -712,7 +712,8 @@ static int g2m_decode_frame(AVCodecContext *avctx, void *data,
}
c->tile_width = bytestream2_get_be32(&bc);
c->tile_height = bytestream2_get_be32(&bc);
if (!c->tile_width || !c->tile_height) {
if (!c->tile_width || !c->tile_height ||
((c->tile_width | c->tile_height) & 0xF)) {
av_log(avctx, AV_LOG_ERROR,
"Invalid tile dimensions %dx%d\n",
c->tile_width, c->tile_height);