xl: Make sure the width is valid

CC: libav-stable@libav.org Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
2013-07-28 18:24:15 +02:00
parent e6cf47ee9e
commit 116aa30db4
1 changed files with 5 additions and 0 deletions
--- a/libavcodec/xl.c
+++ b/libavcodec/xl.c
@@ -71,6 +71,11 @@ static int decode_frame(AVCodecContext *avctx,

    stride = avctx->width - 4;

+    if (avctx->width % 4) {
+        av_log(avctx, AV_LOG_ERROR, "Width not a multiple of 4.\n");
+        return AVERROR_INVALIDDATA;
+    }
+
    if (buf_size < avctx->width * avctx->height) {
        av_log(avctx, AV_LOG_ERROR, "Packet is too small\n");
        return AVERROR_INVALIDDATA;