renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-14 16:23:51 +08:00
Code

NFC: digital: Ensure no NAD byte in DEP_REQ and DEP_RES frames

Browse Source 
According to chapter 14 of the NFC-DEP Digital
Protocol Spec., the NAD byte should never be
present in DEP_REQ or DEP_RES frames.  However,
this is not enforced so add that enforcement code.

Reviewed-by: Thierry Escande <thierry.escande@linux.intel.com>
Tested-by: Thierry Escande <thierry.escande@linux.intel.com>
Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Mark A. Greer 2014-09-23 16:38:06 -07:00 committed by Samuel Ortiz
parent 05afedcb89
commit 3e6b0de805
1 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
net/nfc/digital_dep.c
View File

@ -420,6 +420,11 @@ static void digital_in_recv_dep_res(struct nfc_digital_dev *ddev, void *arg,
goto error;
}
if (DIGITAL_NFC_DEP_NAD_BIT_SET(pfb)) {
rc = -EIO;
goto exit;
}
if (size > resp->len) {
rc = -EIO;
goto error;
@ -572,6 +577,11 @@ static void digital_tg_recv_dep_req(struct nfc_digital_dev *ddev, void *arg,
goto exit;
}
if (DIGITAL_NFC_DEP_NAD_BIT_SET(pfb)) {
rc = -EIO;
goto exit;
}
if (size > resp->len) {
rc = -EIO;
goto exit;