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| author | Dmitry Antipov <dmantipov@yandex.ru> | 2024-04-02 14:32:05 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-05-02 16:17:08 +0200 |
| commit | 89a32741f4217856066c198a4a7267bcdd1edd67 (patch) | |
| tree | 9c8506d133b3d41928d61ffdcabaa215f4b1b150 | |
| parent | 04720ea2e6c64459a90ca28570ea78335eccd924 (diff) | |
| download | linux-stable-89a32741f4217856066c198a4a7267bcdd1edd67.tar.gz linux-stable-89a32741f4217856066c198a4a7267bcdd1edd67.tar.bz2 linux-stable-89a32741f4217856066c198a4a7267bcdd1edd67.zip | |
Bluetooth: Fix memory leak in hci_req_sync_complete()
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>
| -rw-r--r-- | net/bluetooth/hci_request.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c index 76bd6b122724..6b9082c3ccc9 100644 --- a/net/bluetooth/hci_request.c +++ b/net/bluetooth/hci_request.c @@ -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) { hdev->req_result = result; hdev->req_status = HCI_REQ_DONE; - if (skb) + if (skb) { + kfree_skb(hdev->req_skb); hdev->req_skb = skb_get(skb); + } wake_up_interruptible(&hdev->req_wait_q); } } |