File: 0004-malloc-size-check.patch

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From: NOKUBI Takatsugu <knok@daionet.gr.jp>
Date: Thu, 22 Aug 2019 15:30:36 +0900
Subject: malloc size check

---
 src/fromsixel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/fromsixel.c b/src/fromsixel.c
index a60b4bc..648095a 100644
--- a/src/fromsixel.c
+++ b/src/fromsixel.c
@@ -475,7 +475,7 @@ sixel_decode_raw(
                 dmsx = nx;
                 dmsy = ny;
                 dmbuf = (unsigned char *)sixel_allocator_malloc(allocator, dmsx * dmsy);
-                if (dmbuf == NULL) {
+                if (dmbuf == NULL || dmsx * dmsy == 0) {
                     sixel_allocator_free(allocator, imbuf);
                     goto end;
                 }