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From: Takatsugu Nokubi <takatsugu.nokubi@robotfund.co.jp>
Date: Thu, 25 Jul 2019 16:19:59 +0900
Subject: position error check
---
src/fromsixel.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/src/fromsixel.c b/src/fromsixel.c
index 7d8390a..1d86858 100644
--- a/src/fromsixel.c
+++ b/src/fromsixel.c
@@ -572,6 +572,10 @@ sixel_decode_raw_impl(
image->ncolors = context->color_index;
}
+ if (context->pos_x < 0 || context->pos_y < 0) {
+ status = SIXEL_BAD_INPUT;
+ goto end;
+ }
bits = *p - '?';
if (bits == 0) {
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