libX11/backport-CVE-2022-3554.patch
zhouwenpei b4fa1f1db8 fix CVE-2022-3554,CVE-2022-3555
(cherry picked from commit dbfb5bc7eb17fcf215000a0c45f6e14520ab4a51)
2022-10-24 19:54:44 +08:00

57 lines
1.8 KiB
Diff

From 1d11822601fd24a396b354fa616b04ed3df8b4ef Mon Sep 17 00:00:00 2001
From: "Thomas E. Dickey" <dickey@invisible-island.net>
Date: Tue, 4 Oct 2022 18:26:17 -0400
Subject: [PATCH] fix a memory leak in XRegisterIMInstantiateCallback
Analysis:
_XimRegisterIMInstantiateCallback() opens an XIM and closes it using
the internal function pointers, but the internal close function does
not free the pointer to the XIM (this would be done in XCloseIM()).
Report/patch:
Date: Mon, 03 Oct 2022 18:47:32 +0800
From: Po Lu <luangruo@yahoo.com>
To: xorg-devel@lists.x.org
Subject: Re: Yet another leak in Xlib
For reference, here's how I'm calling XRegisterIMInstantiateCallback:
XSetLocaleModifiers ("");
XRegisterIMInstantiateCallback (compositor.display,
XrmGetDatabase (compositor.display),
(char *) compositor.resource_name,
(char *) compositor.app_name,
IMInstantiateCallback, NULL);
and XMODIFIERS is:
@im=ibus
Signed-off-by: Thomas E. Dickey <dickey@invisible-island.net>
Conflict:NA
Reference:https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=1d11822601fd24a396b354fa616b04ed3df8b4ef
---
modules/im/ximcp/imInsClbk.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/modules/im/ximcp/imInsClbk.c b/modules/im/ximcp/imInsClbk.c
index 95b379cb..c10e347f 100644
--- a/modules/im/ximcp/imInsClbk.c
+++ b/modules/im/ximcp/imInsClbk.c
@@ -212,6 +212,9 @@ _XimRegisterIMInstantiateCallback(
if( xim ) {
lock = True;
xim->methods->close( (XIM)xim );
+ /* XIMs must be freed manually after being opened; close just
+ does the protocol to deinitialize the IM. */
+ XFree( xim );
lock = False;
icb->call = True;
callback( display, client_data, NULL );
--
2.27.0