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[Qemu-devel] [PATCH 22/25] pcihp: fix possible array out of bounds


From: Michael Roth
Subject: [Qemu-devel] [PATCH 22/25] pcihp: fix possible array out of bounds
Date: Wed, 27 Aug 2014 12:36:19 -0500

From: Gonglei <address@hidden>

Prevent out-of-bounds array access on
acpi_pcihp_pci_status.

Signed-off-by: Gonglei <address@hidden>
Reviewed-by: Peter Crosthwaite <address@hidden>
Reviewed-by: Michael S. Tsirkin <address@hidden>
Signed-off-by: Michael S. Tsirkin <address@hidden>
Cc: address@hidden
Reviewed-by: Marcel Apfelbaum <address@hidden>
(cherry picked from commit fa365d7cd11185237471823a5a33d36765454e16)
Signed-off-by: Michael Roth <address@hidden>
---
 hw/acpi/pcihp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/acpi/pcihp.c b/hw/acpi/pcihp.c
index fae663a..34dedf1 100644
--- a/hw/acpi/pcihp.c
+++ b/hw/acpi/pcihp.c
@@ -231,7 +231,7 @@ static uint64_t pci_read(void *opaque, hwaddr addr, 
unsigned int size)
     uint32_t val = 0;
     int bsel = s->hotplug_select;
 
-    if (bsel < 0 || bsel > ACPI_PCIHP_MAX_HOTPLUG_BUS) {
+    if (bsel < 0 || bsel >= ACPI_PCIHP_MAX_HOTPLUG_BUS) {
         return 0;
     }
 
-- 
1.9.1




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