From: Marcin Wojtas <mw@semihalf.com>
To: edk2-devel@lists.01.org
Cc: feng.tian@intel.com, michael.d.kinney@intel.com,
liming.gao@intel.com, leif.lindholm@linaro.org,
ard.biesheuvel@linaro.org, nadavh@marvell.com, mw@semihalf.com,
jsd@semihalf.com, jaz@semihalf.com, Ruiyu Ni <ruiyu.ni@intel.com>,
Fei1 Wang <fei1.wang@intel.com>, Star Zeng <star.zeng@intel.com>
Subject: [PATCH] MdeModulePkg: XhciDxe: Prevent illegal memory access in XhcSetHsee
Date: Tue, 25 Sep 2018 19:58:33 +0200 [thread overview]
Message-ID: <1537898313-1767-1-git-send-email-mw@semihalf.com> (raw)
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1206
Newly added XhcSetHsee() routine reads 4 bytes into
a UINT16 variable causing issues on PCIE and NonDiscoverable
Xhci controllers. Fix that.
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Fei1 Wang <fei1.wang@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
---
MdeModulePkg/Bus/Pci/XhciDxe/XhciReg.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/MdeModulePkg/Bus/Pci/XhciDxe/XhciReg.c b/MdeModulePkg/Bus/Pci/XhciDxe/XhciReg.c
index 89f073e..dfe5f6c 100644
--- a/MdeModulePkg/Bus/Pci/XhciDxe/XhciReg.c
+++ b/MdeModulePkg/Bus/Pci/XhciDxe/XhciReg.c
@@ -607,7 +607,7 @@ XhcSetHsee (
PciIo = Xhc->PciIo;
Status = PciIo->Pci.Read (
PciIo,
- EfiPciIoWidthUint16,
+ EfiPciIoWidthUint8,
PCI_COMMAND_OFFSET,
sizeof (XhciCmd),
&XhciCmd
--
2.7.4
next reply other threads:[~2018-09-25 17:59 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-25 17:58 Marcin Wojtas [this message]
2018-09-25 18:29 ` [PATCH] MdeModulePkg: XhciDxe: Prevent illegal memory access in XhcSetHsee Ard Biesheuvel
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