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 --- Changes in v2: - modify the title description. --- net/bluetooth/mgmt.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index f53304cb09db..3e0f88cd975c 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -10413,6 +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);