import libX11-1.6.8-4.el8

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

@@ -0,0 +1,37 @@
+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()
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+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
+

SPECS/libX11.spec

@@ -5,7 +5,7 @@
 Summary: Core X11 protocol client library
 Name: libX11
 Version: 1.6.8
-Release: 3%{?gitdate:.%{gitdate}git%{gitversion}}%{?dist}
+Release: 4%{?gitdate:.%{gitdate}git%{gitversion}}%{?dist}
 License: MIT
 Group: System Environment/Libraries
 URL: http://www.x.org
@@ -22,6 +22,9 @@ Patch2: dont-forward-keycode-0.patch
 Patch3: 0001-Fix-XTS-regression-in-XCopyColormapAndFree.patch
 Patch4: 0001-Fix-poll_for_response-race-condition.patch
 
+# CVE-2020-14363
+Patch5: 0001-Fix-an-integer-overflow-in-init_om.patch
+
 BuildRequires: xorg-x11-util-macros >= 1.11
 BuildRequires: pkgconfig(xproto) >= 7.0.15
 BuildRequires: xorg-x11-xtrans-devel >= 1.0.3-4
@@ -64,6 +67,7 @@ libX11/libxcb interoperability library
 %patch2 -p1 -b .dont-forward-keycode-0
 %patch3 -p1 -b .copycolormapandfree
 %patch4 -p1 -b .race
+%patch5 -p1 -b .fix-an-integer-overflow-in-init_om
 
 %build
 autoreconf -v --install --force
@@ -128,6 +132,9 @@ make %{?_smp_mflags} check
 %{_mandir}/man5/*.5*
 
 %changelog
+* Tue Nov  3 2020 Michel Dänzer <mdaenzer@redhat.com> - 1.6.8-4
+- Fix CVE-2020-14363 (#1873923)
+
 * Mon Feb 24 2020 Adam Jackson <ajax@redhat.com> - 1.6.8-3
 - Fix race condition in poll_for_reponse