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go2meeting: disallow tile dimensions that are not multiple of 16 

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);