diff mbox series

bluetooth: Add check for mgmt_alloc_skb()

Message ID 20250218133548.2564549-1-haoxiang_li2024@163.com
State Superseded
Headers show
Series bluetooth: Add check for mgmt_alloc_skb() | expand

Commit Message

Haoxiang Li Feb. 18, 2025, 1:35 p.m. UTC 
Add check for the return value of mgmt_alloc_skb() in
mgmt_remote_name() to prevent null pointer dereference.

Fixes: ba17bb62ce41 ("Bluetooth: Fix skb allocation in mgmt_remote_name() & mgmt_device_connected()")
Cc: stable@vger.kernel.org
Signed-off-by: Haoxiang Li <haoxiang_li2024@163.com>
---
 net/bluetooth/mgmt.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index f53304cb09db..8383e5ae95be 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -10413,7 +10413,8 @@  void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 
 	skb = mgmt_alloc_skb(hdev, MGMT_EV_DEVICE_FOUND,
 			     sizeof(*ev) + (name ? eir_precalc_len(name_len) : 0));
-
+	if (!skb)
+		return;
 	ev = skb_put(skb, sizeof(*ev));
 	bacpy(&ev->addr.bdaddr, bdaddr);
 	ev->addr.type = link_to_bdaddr(link_type, addr_type);