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[v2] Bluetooth: Add check for mgmt_alloc_skb() in mgmt_remote_name()

Message ID 20250221084947.2756859-1-haoxiang_li2024@163.com
State New
Headers show
Series [v2] Bluetooth: Add check for mgmt_alloc_skb() in mgmt_remote_name() | expand

Commit Message

Haoxiang Li Feb. 21, 2025, 8:49 a.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>
---
Changes in v2:
- modify the title description.
---
 net/bluetooth/mgmt.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

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);