Accepting request 1076649 from home:iznogood:branches:X11:XOrg
- Update to version 23.1.1 (CVE-2023-1393): + This release contains the fix for CVE-2023-1393. + xkbUtils: use existing symbol names instead of deleted deprecated ones + glamor: Don't glFlush/ctx switch unless any work has been performed + xwayland: - Refactor xwl_present_for_each_frame_callback helper - Prevent nested xwl_present_for_each_frame_callback calls + composite: Fix use-after-free of the COW - Drop U_xserver-composite-Fix-use-after-free-of-the-COW.patch: Fixed upstream. OBS-URL: https://build.opensuse.org/request/show/1076649 OBS-URL: https://build.opensuse.org/package/show/X11:XOrg/xwayland?expand=0&rev=50
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From 947bd1b3f4a23565bf10879ec41ba06ebe1e1c76 Mon Sep 17 00:00:00 2001
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From: Olivier Fourdan <ofourdan@redhat.com>
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Date: Mon, 13 Mar 2023 11:08:47 +0100
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Subject: [PATCH xserver] composite: Fix use-after-free of the COW
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ZDI-CAN-19866/CVE-2023-1393
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If a client explicitly destroys the compositor overlay window (aka COW),
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we would leave a dangling pointer to that window in the CompScreen
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structure, which will trigger a use-after-free later.
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Make sure to clear the CompScreen pointer to the COW when the latter gets
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destroyed explicitly by the client.
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This vulnerability was discovered by:
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Jan-Niklas Sohn working with Trend Micro Zero Day Initiative
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Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
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Reviewed-by: Adam Jackson <ajax@redhat.com>
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---
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composite/compwindow.c | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/composite/compwindow.c b/composite/compwindow.c
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index 4e2494b86..b30da589e 100644
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--- a/composite/compwindow.c
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+++ b/composite/compwindow.c
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@@ -620,6 +620,11 @@ compDestroyWindow(WindowPtr pWin)
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ret = (*pScreen->DestroyWindow) (pWin);
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cs->DestroyWindow = pScreen->DestroyWindow;
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pScreen->DestroyWindow = compDestroyWindow;
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+
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+ /* Did we just destroy the overlay window? */
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+ if (pWin == cs->pOverlayWin)
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+ cs->pOverlayWin = NULL;
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+
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/* compCheckTree (pWin->drawable.pScreen); can't check -- tree isn't good*/
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return ret;
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}
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--
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2.40.0
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version https://git-lfs.github.com/spec/v1
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oid sha256:40e0a0c050446ac558ec0f54be4930ffef6be63c6ea980fb654f264ef065af9e
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size 1286056
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Binary file not shown.
3
xwayland-23.1.1.tar.xz
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3
xwayland-23.1.1.tar.xz
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version https://git-lfs.github.com/spec/v1
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oid sha256:fb9461f5cb9fea5e07e91882311b0c88b43e8843b017ebac05eb5af69aa34c15
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size 1286460
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BIN
xwayland-23.1.1.tar.xz.sig
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BIN
xwayland-23.1.1.tar.xz.sig
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@ -1,3 +1,19 @@
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-------------------------------------------------------------------
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Sat Apr 1 11:35:04 UTC 2023 - Bjørn Lie <bjorn.lie@gmail.com>
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- Update to version 23.1.1 (CVE-2023-1393):
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+ This release contains the fix for CVE-2023-1393.
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+ xkbUtils: use existing symbol names instead of deleted
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deprecated ones
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+ glamor: Don't glFlush/ctx switch unless any work has been
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performed
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+ xwayland:
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- Refactor xwl_present_for_each_frame_callback helper
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- Prevent nested xwl_present_for_each_frame_callback calls
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+ composite: Fix use-after-free of the COW
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- Drop U_xserver-composite-Fix-use-after-free-of-the-COW.patch:
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Fixed upstream.
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-------------------------------------------------------------------
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Thu Mar 23 12:32:18 UTC 2023 - Stefan Dirsch <sndirsch@suse.com>
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@ -24,7 +24,7 @@
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%endif
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Name: xwayland
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Version: 23.1.0
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Version: 23.1.1
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Release: 0
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URL: http://xorg.freedesktop.org
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Summary: Xwayland Xserver
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@ -33,7 +33,6 @@ Group: System/X11/Servers/XF86_4
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Source0: %{url}/archive/individual/xserver/%{name}-%{version}.tar.xz
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Source1: %{url}/archive/individual/xserver/%{name}-%{version}.tar.xz.sig
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Source2: xwayland.keyring
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Patch1209543: U_xserver-composite-Fix-use-after-free-of-the-COW.patch
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BuildRequires: meson
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BuildRequires: ninja
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@ -66,7 +65,7 @@ BuildRequires: pkgconfig(renderproto)
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BuildRequires: pkgconfig(resourceproto)
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BuildRequires: pkgconfig(scrnsaverproto)
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BuildRequires: pkgconfig(videoproto)
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BuildRequires: pkgconfig(wayland-client)
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BuildRequires: pkgconfig(wayland-client) >= 1.21.0
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BuildRequires: pkgconfig(wayland-protocols)
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%if 0%{?have_wayland_eglstream} == 1
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BuildRequires: pkgconfig(wayland-eglstream-protocols)
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