[PATCH v3 26/35] nfc: st-nci: Fix host_list verification after secure element activation
From: Christophe Ricard <hidden>
Date: 2015-10-26 06:51:07
Also in:
stable
Subsystem:
nfc subsystem, the rest · Maintainers:
David Heidelberg, Linus Torvalds
A secure element can be activated in different order. The host_list is updated keeping a fixed order: <terminal_host_id><uicc_id><ese_id>. Cc: stable@vger.kernel.org Signed-off-by: Christophe Ricard <redacted> --- drivers/nfc/st-nci/se.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/nfc/st-nci/se.c b/drivers/nfc/st-nci/se.c
index 3059baa..1cc24b6 100644
--- a/drivers/nfc/st-nci/se.c
+++ b/drivers/nfc/st-nci/se.c@@ -423,7 +423,7 @@ static int st_nci_control_se(struct nci_dev *ndev, u8 se_idx, u8 state) { struct st_nci_info *info = nci_get_drvdata(ndev); - int r; + int r, i; struct sk_buff *sk_host_list; u8 host_id;
@@ -470,7 +470,10 @@ static int st_nci_control_se(struct nci_dev *ndev, u8 se_idx, if (r != NCI_HCI_ANY_OK) return r; - host_id = sk_host_list->data[sk_host_list->len - 1]; + for (i = 0; i < sk_host_list->len && + sk_host_list->data[i] != se_idx; i++) + ; + host_id = sk_host_list->data[i]; kfree_skb(sk_host_list); if (state == ST_NCI_SE_MODE_ON && host_id == se_idx) return se_idx;
--
2.1.4