From: Limin Wang <lance.lmw...@gmail.com>
Signed-off-by: Limin Wang <lance.lmw...@gmail.com>
---
libavcodec/dvdsubenc.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/libavcodec/dvdsubenc.c b/libavcodec/dvdsubenc.c
index fc3b7d1816..d29db7d49c 100644
--- a/libavcodec/dvdsubenc.c
+++ b/libavcodec/dvdsubenc.c
@@ -376,6 +376,12 @@ static int encode_dvd_subtitles(AVCodecContext *avctx,
x2 = vrect.x + vrect.w - 1;
y2 = vrect.y + vrect.h - 1;
+ if (x2 > avctx->width || y2 > avctx->height) {
+ av_log(avctx, AV_LOG_ERROR, "canvas_size(%d:%d) is too small(%d:%d)
for render\n",
+ avctx->width, avctx->height, x2, y2);
+ ret = AVERROR(EINVAL);;
+ goto fail;
+ }
*q++ = 0x05;
// x1 x2 -> 6 nibbles
*q++ = vrect.x >> 4;
--
2.35.1
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