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Bluetooth: Fix memory leak in hci_req_sync_complete()

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commit 45d355a926ab40f3ae7bc0b0a00cb0e3e8a5a810 upstream.

In 'hci_req_sync_complete()', always free the previous sync
request state before assigning reference to a new one.

Reported-by: syzbot+39ec16ff6cc18b1d066d@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=39ec16ff6cc18b1d066d
Cc: stable@vger.kernel.org
Fixes: f60cb30579d3 ("Bluetooth: Convert hci_req_sync family of function to new request API")
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dmitry Antipov 2024-04-02 14:32:05 +03:00 committed by Ksawlii
parent b07af379a7
commit 268dae0abe
1 changed files with 3 additions and 1 deletions
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4
net/bluetooth/hci_request.c
View file

@ -107,8 +107,10 @@ static void hci_req_sync_complete(struct hci_dev *hdev, u8 result, u16 opcode,
if (hdev->req_status == HCI_REQ_PEND) { if (hdev->req_status == HCI_REQ_PEND) {
hdev->req_result = result; hdev->req_result = result;
hdev->req_status = HCI_REQ_DONE; hdev->req_status = HCI_REQ_DONE;
if (skb) if (skb) {
kfree_skb(hdev->req_skb);
hdev->req_skb = skb_get(skb); hdev->req_skb = skb_get(skb);
}
wake_up_interruptible(&hdev->req_wait_q); wake_up_interruptible(&hdev->req_wait_q);
} }
} }