ghostscript/backport-CVE-2025-27835.patch

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From 920fae688705b3a25a1f8925f3837219a6243565 Mon Sep 17 00:00:00 2001
From: Zdenek Hutyra <zhutyra@centrum.cz>
Date: Wed, 20 Nov 2024 11:27:52 +0000
Subject: Bug 708131: Fix confusion between bytes and shorts
We were copying data from a string in multiple of shorts, rather than multiple
of bytes, leading to both an read (probably benign, given the memory manager)
and write buffer overflow.
CVE-2025-27835
---
psi/zbfont.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/psi/zbfont.c b/psi/zbfont.c
index acffb39ef..5850ab54d 100644
--- a/psi/zbfont.c
+++ b/psi/zbfont.c
@@ -253,7 +253,7 @@ gs_font_map_glyph_to_unicode(gs_font *font, gs_glyph glyph, int ch, ushort *u, u
if (l > length)
return l;
- memcpy(unicode_return, v->value.const_bytes, l * sizeof(short));
+ memcpy(unicode_return, v->value.const_bytes, l);
return l;
}
if (r_type(v) == t_integer) {
--
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