diff options
Diffstat (limited to 'src/interface')
| -rw-r--r-- | src/interface/efi/efi_usb.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/interface/efi/efi_usb.c b/src/interface/efi/efi_usb.c index bac2d053a..a8c274a57 100644 --- a/src/interface/efi/efi_usb.c +++ b/src/interface/efi/efi_usb.c @@ -981,6 +981,12 @@ efi_usb_get_string_descriptor ( EFI_USB_IO_PROTOCOL *usbio, UINT16 language, goto err_get_header; } len = header.len; + if ( len < sizeof ( header ) ) { + DBGC ( usbdev, "USBDEV %s underlength string %d:%d\n", + usbintf->name, language, index ); + rc = -EINVAL; + goto err_len; + } /* Allocate buffer */ if ( ( efirc = bs->AllocatePool ( EfiBootServicesData, len, @@ -1014,6 +1020,7 @@ efi_usb_get_string_descriptor ( EFI_USB_IO_PROTOCOL *usbio, UINT16 language, err_get_descriptor: bs->FreePool ( buffer ); err_alloc: + err_len: err_get_header: bs->RestoreTPL ( saved_tpl ); return EFIRC ( rc ); |