!195 fix CVE-2023-6478 CVE-2023-6377

From: @zppzhangpan 
Reviewed-by: @t_feng 
Signed-off-by: @t_feng

backport-CVE-2023-6377.patch

@@ -0,0 +1,78 @@
+From 0c1a93d319558fe3ab2d94f51d174b4f93810afd Mon Sep 17 00:00:00 2001
+From: Peter Hutterer <peter.hutterer@who-t.net>
+Date: Tue, 28 Nov 2023 15:19:04 +1000
+Subject: [PATCH] Xi: allocate enough XkbActions for our buttons
+
+button->xkb_acts is supposed to be an array sufficiently large for all
+our buttons, not just a single XkbActions struct. Allocating
+insufficient memory here means when we memcpy() later in
+XkbSetDeviceInfo we write into memory that wasn't ours to begin with,
+leading to the usual security ooopsiedaisies.
+
+CVE-2023-6377, ZDI-CAN-22412, ZDI-CAN-22413
+
+This vulnerability was discovered by:
+Jan-Niklas Sohn working with Trend Micro Zero Day Initiative
+
+Reference:https://gitlab.freedesktop.org/xorg/xserver/-/commit/0c1a93d319558fe3ab2d94f51d174b4f93810afd
+Conflict:NA
+
+---
+ Xi/exevents.c | 12 ++++++------
+ dix/devices.c | 10 ++++++++++
+ 2 files changed, 16 insertions(+), 6 deletions(-)
+
+diff --git a/Xi/exevents.c b/Xi/exevents.c
+index dcd4efb3bc..54ea11a938 100644
+--- a/Xi/exevents.c
++++ b/Xi/exevents.c
+@@ -611,13 +611,13 @@ DeepCopyPointerClasses(DeviceIntPtr from, DeviceIntPtr to)
+         }
+ 
+         if (from->button->xkb_acts) {
+-            if (!to->button->xkb_acts) {
+-                to->button->xkb_acts = calloc(1, sizeof(XkbAction));
+-                if (!to->button->xkb_acts)
+-                    FatalError("[Xi] not enough memory for xkb_acts.\n");
+-            }
++            size_t maxbuttons = max(to->button->numButtons, from->button->numButtons);
++            to->button->xkb_acts = xnfreallocarray(to->button->xkb_acts,
++                                                   maxbuttons,
++                                                   sizeof(XkbAction));
++            memset(to->button->xkb_acts, 0, maxbuttons * sizeof(XkbAction));
+             memcpy(to->button->xkb_acts, from->button->xkb_acts,
+-                   sizeof(XkbAction));
++                   from->button->numButtons * sizeof(XkbAction));
+         }
+         else {
+             free(to->button->xkb_acts);
+diff --git a/dix/devices.c b/dix/devices.c
+index b063128df0..3f3224d626 100644
+--- a/dix/devices.c
++++ b/dix/devices.c
+@@ -2539,6 +2539,8 @@ RecalculateMasterButtons(DeviceIntPtr slave)
+ 
+     if (master->button && master->button->numButtons != maxbuttons) {
+         int i;
++        int last_num_buttons = master->button->numButtons;
++
+         DeviceChangedEvent event = {
+             .header = ET_Internal,
+             .type = ET_DeviceChanged,
+@@ -2549,6 +2551,14 @@ RecalculateMasterButtons(DeviceIntPtr slave)
+         };
+ 
+         master->button->numButtons = maxbuttons;
++        if (last_num_buttons < maxbuttons) {
++            master->button->xkb_acts = xnfreallocarray(master->button->xkb_acts,
++                                                       maxbuttons,
++                                                       sizeof(XkbAction));
++            memset(&master->button->xkb_acts[last_num_buttons],
++                   0,
++                   (maxbuttons - last_num_buttons) * sizeof(XkbAction));
++        }
+ 
+         memcpy(&event.buttons.names, master->button->labels, maxbuttons *
+                sizeof(Atom));
+-- 
+GitLab

backport-CVE-2023-6478.patch

@@ -0,0 +1,62 @@
+From 14f480010a93ff962fef66a16412fafff81ad632 Mon Sep 17 00:00:00 2001
+From: Peter Hutterer <peter.hutterer@who-t.net>
+Date: Mon, 27 Nov 2023 16:27:49 +1000
+Subject: [PATCH] randr: avoid integer truncation in length check of
+ ProcRRChange*Property
+
+Affected are ProcRRChangeProviderProperty and ProcRRChangeOutputProperty.
+See also xserver@8f454b79 where this same bug was fixed for the core
+protocol and XI.
+
+This fixes an OOB read and the resulting information disclosure.
+
+Length calculation for the request was clipped to a 32-bit integer. With
+the correct stuff->nUnits value the expected request size was
+truncated, passing the REQUEST_FIXED_SIZE check.
+
+The server then proceeded with reading at least stuff->num_items bytes
+(depending on stuff->format) from the request and stuffing whatever it
+finds into the property. In the process it would also allocate at least
+stuff->nUnits bytes, i.e. 4GB.
+
+CVE-2023-6478, ZDI-CAN-22561
+
+This vulnerability was discovered by:
+Jan-Niklas Sohn working with Trend Micro Zero Day Initiative
+
+Reference:https://gitlab.freedesktop.org/xorg/xserver/-/commit/14f480010a93ff962fef66a16412fafff81ad632
+Conflict:NA
+
+---
+ randr/rrproperty.c         | 2 +-
+ randr/rrproviderproperty.c | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/randr/rrproperty.c b/randr/rrproperty.c
+index 25469f57b2..c4fef8a1f6 100644
+--- a/randr/rrproperty.c
++++ b/randr/rrproperty.c
+@@ -530,7 +530,7 @@ ProcRRChangeOutputProperty(ClientPtr client)
+     char format, mode;
+     unsigned long len;
+     int sizeInBytes;
+-    int totalSize;
++    uint64_t totalSize;
+     int err;
+ 
+     REQUEST_AT_LEAST_SIZE(xRRChangeOutputPropertyReq);
+diff --git a/randr/rrproviderproperty.c b/randr/rrproviderproperty.c
+index b79c17f9bf..90c5a9a933 100644
+--- a/randr/rrproviderproperty.c
++++ b/randr/rrproviderproperty.c
+@@ -498,7 +498,7 @@ ProcRRChangeProviderProperty(ClientPtr client)
+     char format, mode;
+     unsigned long len;
+     int sizeInBytes;
+-    int totalSize;
++    uint64_t totalSize;
+     int err;
+ 
+     REQUEST_AT_LEAST_SIZE(xRRChangeProviderPropertyReq);
+-- 
+GitLab

xorg-x11-server.spec

@@ -16,7 +16,7 @@
 
 Name:           xorg-x11-server
 Version:        1.20.11
-Release:        23
+Release:        24
 Summary:        X.Org X11 X server
 License:        MIT and GPLv2
 URL:            https://www.x.org
@@ -109,6 +109,8 @@ Patch6021: backport-CVE-2022-3550.patch
 Patch6022: render-fix-build-with-gcc12.patch
 Patch6023: backport-CVE-2023-5367.patch
 Patch6024: backport-CVE-2023-5380.patch
+Patch6025: backport-CVE-2023-6478.patch
+Patch6026: backport-CVE-2023-6377.patch
 
 BuildRequires:  audit-libs-devel autoconf automake bison dbus-devel flex git gcc 
 BuildRequires:  systemtap-sdt-devel libtool pkgconfig 
@@ -450,6 +452,9 @@ find %{inst_srcdir}/hw/xfree86 -name \*.c -delete
 %{_mandir}/man*/*
 
 %changelog
+* Fri Dec 15 2023 zhangpan <zhangpan103@h-partners.com> -1.20.11-24
+- fix CVE-2023-6478 CVE-2023-6377
+
 * Tue Nov 07 2023 zhouwenpei <zhouwenpei1@h-partners.com> -1.20.11-23
 - Rollback CVE-2023-5574 patch