mirror of
https://gitlab.alpinelinux.org/alpine/aports.git
synced 2025-07-21 10:15:12 +03:00
f636832bd4
Patches on github are not stable. The index hashes can change, causing the checksums to mismatch.
41 lines
1.1 KiB
Diff
41 lines
1.1 KiB
Diff
From 32e4e8b4bcbacbf92af7c88337efae21986d9603 Mon Sep 17 00:00:00 2001
|
|
From: Robin Watts <Robin.Watts@artifex.com>
|
|
Date: Thu, 8 Oct 2020 18:10:28 +0100
|
|
Subject: [PATCH] Bug 702958: Fix overflow in fz_clear_pixmap_with_value.
|
|
|
|
---
|
|
source/fitz/pixmap.c | 7 ++++---
|
|
1 file changed, 4 insertions(+), 3 deletions(-)
|
|
|
|
diff --git a/source/fitz/pixmap.c b/source/fitz/pixmap.c
|
|
index 66873d2146..80d8bb62fa 100644
|
|
--- a/source/fitz/pixmap.c
|
|
+++ b/source/fitz/pixmap.c
|
|
@@ -555,7 +555,8 @@ void
|
|
fz_clear_pixmap_with_value(fz_context *ctx, fz_pixmap *pix, int value)
|
|
{
|
|
unsigned char *s;
|
|
- int w, h, n, stride, len;
|
|
+ int w, h, n;
|
|
+ ptrdiff_t stride, len;
|
|
int alpha = pix->alpha;
|
|
|
|
w = pix->w;
|
|
@@ -572,7 +573,7 @@ fz_clear_pixmap_with_value(fz_context *ctx, fz_pixmap *pix, int value)
|
|
|
|
n = pix->n;
|
|
stride = pix->stride;
|
|
- len = w * n;
|
|
+ len = (ptrdiff_t)w * n;
|
|
|
|
s = pix->samples;
|
|
if (value == 255 || !alpha)
|
|
@@ -584,7 +585,7 @@ fz_clear_pixmap_with_value(fz_context *ctx, fz_pixmap *pix, int value)
|
|
}
|
|
while (h--)
|
|
{
|
|
- memset(s, value, (unsigned int)len);
|
|
+ memset(s, value, len);
|
|
s += stride;
|
|
}
|
|
}
|