forked from pool/xorg-x11-server
Stefan Dirsch
97f1555e30
* CVE-2021-4009/ZDI-CAN-14950 (bsc#1190487)
The handler for the CreatePointerBarrier request of the XFixes
extension does not properly validate the request length leading
to out of bounds memory write.
- U_Xext-Fix-out-of-bounds-access-in-SProcScreenSaverSus.patch
* CVE-2021-4010/ZDI-CAN-14951 (bsc#1190488)
The handler for the Suspend request of the Screen Saver extension
does not properly validate the request length leading to out of
bounds memory write.
- U_record-Fix-out-of-bounds-access-in-SwapCreateRegiste.patch
* CVE-2021-4011/ZDI-CAN-14952 (bsc#1190489)
The handlers for the RecordCreateContext and RecordRegisterClients
requests of the Record extension do not properly validate the request
length leading to out of bounds memory write.
OBS-URL: https://build.opensuse.org/package/show/X11:XOrg/xorg-x11-server?expand=0&rev=811
44 lines
1.5 KiB
Diff
44 lines
1.5 KiB
Diff
From b5196750099ae6ae582e1f46bd0a6dad29550e02 Mon Sep 17 00:00:00 2001
|
|
From: Povilas Kanapickas <povilas@radix.lt>
|
|
Date: Tue, 14 Dec 2021 15:00:01 +0200
|
|
Subject: [PATCH] xfixes: Fix out of bounds access in
|
|
*ProcXFixesCreatePointerBarrier()
|
|
|
|
ZDI-CAN-14950, CVE-2021-4009
|
|
|
|
This vulnerability was discovered and the fix was suggested by:
|
|
Jan-Niklas Sohn working with Trend Micro Zero Day Initiative
|
|
|
|
Signed-off-by: Povilas Kanapickas <povilas@radix.lt>
|
|
---
|
|
xfixes/cursor.c | 6 ++++--
|
|
1 file changed, 4 insertions(+), 2 deletions(-)
|
|
|
|
diff --git a/xfixes/cursor.c b/xfixes/cursor.c
|
|
index 60580b88f..c5d4554b2 100644
|
|
--- a/xfixes/cursor.c
|
|
+++ b/xfixes/cursor.c
|
|
@@ -1010,7 +1010,8 @@ ProcXFixesCreatePointerBarrier(ClientPtr client)
|
|
{
|
|
REQUEST(xXFixesCreatePointerBarrierReq);
|
|
|
|
- REQUEST_FIXED_SIZE(xXFixesCreatePointerBarrierReq, pad_to_int32(stuff->num_devices));
|
|
+ REQUEST_FIXED_SIZE(xXFixesCreatePointerBarrierReq,
|
|
+ pad_to_int32(stuff->num_devices * sizeof(CARD16)));
|
|
LEGAL_NEW_RESOURCE(stuff->barrier, client);
|
|
|
|
return XICreatePointerBarrier(client, stuff);
|
|
@@ -1027,7 +1028,8 @@ SProcXFixesCreatePointerBarrier(ClientPtr client)
|
|
|
|
swaps(&stuff->length);
|
|
swaps(&stuff->num_devices);
|
|
- REQUEST_FIXED_SIZE(xXFixesCreatePointerBarrierReq, pad_to_int32(stuff->num_devices));
|
|
+ REQUEST_FIXED_SIZE(xXFixesCreatePointerBarrierReq,
|
|
+ pad_to_int32(stuff->num_devices * sizeof(CARD16)));
|
|
|
|
swapl(&stuff->barrier);
|
|
swapl(&stuff->window);
|
|
--
|
|
2.26.2
|
|
|