35 lines
1008 B
Diff
35 lines
1008 B
Diff
From fe0c050276c09f43cc1ae80b4553db42398ca84c Mon Sep 17 00:00:00 2001
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From: Povilas Kanapickas <povilas@radix.lt>
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Date: Tue, 14 Dec 2021 15:00:02 +0200
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Subject: [PATCH xserver 3/4] Xext: Fix out of bounds access in
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SProcScreenSaverSuspend()
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ZDI-CAN-14951, CVE-2021-4010
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This vulnerability was discovered and the fix was suggested by:
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Jan-Niklas Sohn working with Trend Micro Zero Day Initiative
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Signed-off-by: Povilas Kanapickas <povilas@radix.lt>
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(cherry picked from commit 6c4c53010772e3cb4cb8acd54950c8eec9c00d21)
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---
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Xext/saver.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/Xext/saver.c b/Xext/saver.c
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index 1d7e3cadf..f813ba08d 100644
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--- a/Xext/saver.c
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+++ b/Xext/saver.c
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@@ -1351,8 +1351,8 @@ SProcScreenSaverSuspend(ClientPtr client)
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REQUEST(xScreenSaverSuspendReq);
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swaps(&stuff->length);
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- swapl(&stuff->suspend);
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REQUEST_SIZE_MATCH(xScreenSaverSuspendReq);
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+ swapl(&stuff->suspend);
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return ProcScreenSaverSuspend(client);
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}
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--
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2.33.1
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