Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1253623 > unrolled thread

[PATCH v4 08/10] nfc: nci: fix possible crash in nci_core_conn_create

Back to article view | Back to linux.kernel

This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by below is the oldest one visible, not the original post.

Contents

  [PATCH v4 08/10] nfc: nci: fix possible crash in nci_core_conn_create Robert Dolca <robert.dolca@intel.com> - 2015-10-22 11:20 +0200

#1253623 — [PATCH v4 08/10] nfc: nci: fix possible crash in nci_core_conn_create

If the number of destination speific parameters supplied is 0 the call
will fail. If the first destination specific parameter does not have a
value, curr_id will be set to 0.

Signed-off-by: Robert Dolca <robert.dolca@intel.com>
---
 net/nfc/nci/core.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c
index f66a5da..9d5f7a2 100644
--- a/net/nfc/nci/core.c
+++ b/net/nfc/nci/core.c
@@ -602,12 +602,19 @@ int nci_core_conn_create(struct nci_dev *ndev, u8 destination_type,
 	if (!cmd)
 		return -ENOMEM;
 
+	if (!number_destination_params)
+		return -EINVAL;
+
 	cmd->destination_type = destination_type;
 	cmd->number_destination_params = number_destination_params;
 	memcpy(cmd->params, params, params_len);
 
 	data.cmd = cmd;
-	ndev->cur_id = params->value[DEST_SPEC_PARAMS_ID_INDEX];
+
+	if (params->length > 0)
+		ndev->cur_id = params->value[DEST_SPEC_PARAMS_ID_INDEX];
+	else
+		ndev->cur_id = 0;
 
 	r = __nci_request(ndev, nci_core_conn_create_req,
 			  (unsigned long)&data,
-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[toc] | [standalone]

Back to top | Article view | linux.kernel

csiph-web