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| author | Kei Kebreau <kei@openmailbox.org> | 2017-07-06 15:28:07 -0400 |
|---|---|---|
| committer | Leo Famulari <leo@famulari.name> | 2017-07-06 23:52:22 -0400 |
| commit | ab104672e15572ff5586ea607b1762e5dc35b2aa (patch) | |
| tree | 9395813f8526cba9b057760bb8c8cbf425662e50 /gnu/packages/patches/xorg-server-CVE-2017-10972.patch | |
| parent | 96dcaa0ca9fd29a68c34e9d28852e9ece2141ba8 (diff) | |
| download | guix-patches-ab104672e15572ff5586ea607b1762e5dc35b2aa.tar guix-patches-ab104672e15572ff5586ea607b1762e5dc35b2aa.tar.gz | |
gnu: xorg-server: Fix CVE-2017-{10971,10972}.
* gnu/packages/patches/xorg-server-CVE-2017-10971.patch,
gnu/packages/patches/xorg-server-CVE-2017-10972.patch: New files.
* gnu/local.mk (dist_patch_DATA): Add them.
* gnu/packages/xorg.scm (xorg-server)[source]: Use them.
Signed-off-by: Leo Famulari <leo@famulari.name>
Diffstat (limited to 'gnu/packages/patches/xorg-server-CVE-2017-10972.patch')
| -rw-r--r-- | gnu/packages/patches/xorg-server-CVE-2017-10972.patch | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/gnu/packages/patches/xorg-server-CVE-2017-10972.patch b/gnu/packages/patches/xorg-server-CVE-2017-10972.patch new file mode 100644 index 0000000000..f24e9c0ae6 --- /dev/null +++ b/gnu/packages/patches/xorg-server-CVE-2017-10972.patch @@ -0,0 +1,35 @@ +From 05442de962d3dc624f79fc1a00eca3ffc5489ced Mon Sep 17 00:00:00 2001 +From: Michal Srb <msrb@suse.com> +Date: Wed, 24 May 2017 15:54:39 +0300 +Subject: Xi: Zero target buffer in SProcXSendExtensionEvent. + +Make sure that the xEvent eventT is initialized with zeros, the same way as +in SProcSendEvent. + +Some event swapping functions do not overwrite all 32 bytes of xEvent +structure, for example XSecurityAuthorizationRevoked. Two cooperating +clients, one swapped and the other not, can send +XSecurityAuthorizationRevoked event to each other to retrieve old stack data +from X server. This can be potentialy misused to go around ASLR or +stack-protector. + +Signed-off-by: Michal Srb <msrb@suse.com> +Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net> +Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> + +diff --git a/Xi/sendexev.c b/Xi/sendexev.c +index 11d8202..1cf118a 100644 +--- a/Xi/sendexev.c ++++ b/Xi/sendexev.c +@@ -78,7 +78,7 @@ SProcXSendExtensionEvent(ClientPtr client) + { + CARD32 *p; + int i; +- xEvent eventT; ++ xEvent eventT = { .u.u.type = 0 }; + xEvent *eventP; + EventSwapPtr proc; + +-- +cgit v0.10.2 + |