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[PULL 14/17] hw/cxl: Fix out of bound array access
From: |
Michael Tokarev |
Subject: |
[PULL 14/17] hw/cxl: Fix out of bound array access |
Date: |
Thu, 21 Sep 2023 11:35:03 +0300 |
From: Dmitry Frolov <frolov@swemel.ru>
According to cxl_interleave_ways_enc(), fw->num_targets is allowed to be up
to 16. This also corresponds to CXL r3.0 spec. So, the fw->target_hbs[]
array is iterated from 0 to 15. But it is statically declared of length 8.
Thus, out of bound array access may occur.
Fixes: c28db9e000 ("hw/pci-bridge: Make PCIe and CXL PXB Devices inherit from
TYPE_PXB_DEV")
Signed-off-by: Dmitry Frolov <frolov@swemel.ru>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Link: https://lore.kernel.org/r/20230913101055.754709-1-frolov@swemel.ru
Cc: qemu-stable@nongnu.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
---
include/hw/cxl/cxl.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/hw/cxl/cxl.h b/include/hw/cxl/cxl.h
index 56c9e7676e..4944725849 100644
--- a/include/hw/cxl/cxl.h
+++ b/include/hw/cxl/cxl.h
@@ -29,7 +29,7 @@ typedef struct PXBCXLDev PXBCXLDev;
typedef struct CXLFixedWindow {
uint64_t size;
char **targets;
- PXBCXLDev *target_hbs[8];
+ PXBCXLDev *target_hbs[16];
uint8_t num_targets;
uint8_t enc_int_ways;
uint8_t enc_int_gran;
--
2.39.2
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