diff options
Diffstat (limited to 'libavcodec/vmnc.c')
| -rw-r--r-- | libavcodec/vmnc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/vmnc.c b/libavcodec/vmnc.c index 5f91ab1b31..46bd52ee26 100644 --- a/libavcodec/vmnc.c +++ b/libavcodec/vmnc.c @@ -291,6 +291,11 @@ static int decode_hextile(VmncContext *c, uint8_t* dst, GetByteContext *gb, fg = vmnc_get_pixel(gb, bpp, c->bigendian); xy = bytestream2_get_byte(gb); wh = bytestream2_get_byte(gb); + if ( (xy >> 4) + (wh >> 4) + 1 > w - i + || (xy & 0xF) + (wh & 0xF)+1 > h - j) { + av_log(c->avctx, AV_LOG_ERROR, "Rectangle outside picture\n"); + return AVERROR_INVALIDDATA; + } paint_rect(dst2, xy >> 4, xy & 0xF, (wh>>4)+1, (wh & 0xF)+1, fg, bpp, stride); } |