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

[arei.gonglei]

From: Gonglei <address@hidden>

When 'bsel == ACPI_PCIHP_MAX_HOTPLUG_BUS', the
s->acpi_pcihp_pci_status[bsel] array will out of bounds.

Add check for this.

Signed-off-by: Gonglei <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;
     }
 
-- 
1.7.12.4