Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ruiyu Ni <[email protected]>
Cc: Star Zeng <[email protected]>
---
MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.c
b/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.c
index 0b35cbacf0..c35c7bdc12 100644
--- a/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.c
+++ b/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.c
@@ -736,6 +736,13 @@ UsbBootDetectMedia (
return Status;
}
+ //
+ // Simply reject device whose block size is unacceptable small (==0) or
large (>64K).
+ //
+ if ((Media->BlockSize == 0) || (Media->BlockSize > USB_BOOT_MAX_CARRY_SIZE))
{
+ return EFI_DEVICE_ERROR;
+ }
+
//
// Detect whether it is necessary to reinstall the Block I/O Protocol.
//
--
2.16.1.windows.1
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