libX11/0001-Fix-an-integer-overflow-in-init_om.patch

38 lines
1.2 KiB
Diff

From 2c67fab8415a1d32395de87f056bc5f3b37fedb0 Mon Sep 17 00:00:00 2001
From: Matthieu Herrb <matthieu@herrb.eu>
Date: Thu, 13 Aug 2020 18:02:58 +0200
Subject: [PATCH] Fix an integer overflow in init_om()
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CVE-2020-14363
This can lead to a double free later, as reported by Jayden Rivers.
Signed-off-by: Matthieu Herrb <matthieu@herrb.eu>
(cherry picked from commit acdaaadcb3d85c61fd43669fc5dddf0f8c3f911d)
Signed-off-by: Michel Dänzer <mdaenzer@redhat.com>
---
modules/om/generic/omGeneric.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/modules/om/generic/omGeneric.c b/modules/om/generic/omGeneric.c
index 22f826ec..bcfb9ab8 100644
--- a/modules/om/generic/omGeneric.c
+++ b/modules/om/generic/omGeneric.c
@@ -1908,7 +1908,8 @@ init_om(
char **required_list;
XOrientation *orientation;
char **value, buf[BUFSIZ], *bufptr;
- int count = 0, num = 0, length = 0;
+ int count = 0, num = 0;
+ unsigned int length = 0;
_XlcGetResource(lcd, "XLC_FONTSET", "on_demand_loading", &value, &count);
if (count > 0 && _XlcCompareISOLatin1(*value, "True") == 0)
--
2.28.0