From: Haoxiang Li Date: Fri, 21 Feb 2025 08:49:47 +0000 (+0800) Subject: Bluetooth: Add check for mgmt_alloc_skb() in mgmt_remote_name() X-Git-Tag: next-20250225~104^2~1 X-Git-Url: https://gentwo.org/gitweb/?a=commitdiff_plain;h=62ee156d6b292330d78a3c67b3e017d95c967e16;p=linux%2F.git Bluetooth: Add check for mgmt_alloc_skb() in mgmt_remote_name() 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 Signed-off-by: Luiz Augusto von Dentz --- diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index a31b46db50dd..6df014d582c1 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -10373,6 +10373,8 @@ 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);