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From 100f33ff8a1d55986e43b99ba8726abc29ee8d26 Mon Sep 17 00:00:00 2001
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From: Jon Maloy <jmaloy@redhat.com>
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Date: Mon, 5 Dec 2022 15:32:55 -0500
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Subject: [PATCH 5/5] hw/display/qxl: Assert memory slot fits in preallocated
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MemoryRegion
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Jon Maloy <jmaloy@redhat.com>
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RH-MergeRequest: 240: hw/display/qxl: Have qxl_log_command Return early if no log_cmd handler
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RH-Bugzilla: 2148545
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RH-Acked-by: Gerd Hoffmann <kraxel@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Marc-André Lureau <marcandre.lureau@redhat.com>
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RH-Commit: [5/5] f809ce48e7989dd6547b7c8bf1a5efc3fdcacbac (jmaloy/jons-qemu-kvm)
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BZ: https://bugzilla.redhat.com/show_bug.cgi?id=2148545
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CVE: CVE-2022-4144
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Upstream: Merged
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commit 86fdb0582c653a9824183679403a85f588260d62
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Author: Philippe Mathieu-Daudé <philmd@linaro.org>
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Date: Mon Nov 28 21:27:41 2022 +0100
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hw/display/qxl: Assert memory slot fits in preallocated MemoryRegion
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Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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Message-Id: <20221128202741.4945-6-philmd@linaro.org>
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(cherry picked from commit 86fdb0582c653a9824183679403a85f588260d62)
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Signed-off-by: Jon Maloy <jmaloy@redhat.com>
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---
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hw/display/qxl.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/hw/display/qxl.c b/hw/display/qxl.c
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index 2a4b2d4158..bcd9e8716a 100644
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--- a/hw/display/qxl.c
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+++ b/hw/display/qxl.c
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@@ -1372,6 +1372,7 @@ static int qxl_add_memslot(PCIQXLDevice *d, uint32_t slot_id, uint64_t delta,
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qxl_set_guest_bug(d, "%s: pci_region = %d", __func__, pci_region);
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return 1;
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}
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+ assert(guest_end - pci_start <= memory_region_size(mr));
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virt_start = (intptr_t)memory_region_get_ram_ptr(mr);
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memslot.slot_id = slot_id;
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--
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2.37.3
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