| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.4 113/453] Bluetooth: hci_h5: fix memory leak in h5_close | Date | Mon, 28 Dec 2020 13:45:49 +0100 |
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From: Anant Thazhemadam <anant.thazhemadam@gmail.com>
[ Upstream commit 855af2d74c870d747bf53509f8b2d7b9dc9ee2c3 ]
When h5_close() is called, h5 is directly freed when !hu->serdev. However, h5->rx_skb is not freed, which causes a memory leak.
Freeing h5->rx_skb and setting it to NULL, fixes this memory leak.
Fixes: ce945552fde4 ("Bluetooth: hci_h5: Add support for serdev enumerated devices") Reported-by: syzbot+6ce141c55b2f7aafd1c4@syzkaller.appspotmail.com Tested-by: syzbot+6ce141c55b2f7aafd1c4@syzkaller.appspotmail.com Signed-off-by: Anant Thazhemadam <anant.thazhemadam@gmail.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/bluetooth/hci_h5.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/bluetooth/hci_h5.c b/drivers/bluetooth/hci_h5.c index 5df0651b6cd55..e11af747395dd 100644 --- a/drivers/bluetooth/hci_h5.c +++ b/drivers/bluetooth/hci_h5.c @@ -244,6 +244,9 @@ static int h5_close(struct hci_uart *hu) skb_queue_purge(&h5->rel); skb_queue_purge(&h5->unrel); + kfree_skb(h5->rx_skb); + h5->rx_skb = NULL; + if (h5->vnd && h5->vnd->close) h5->vnd->close(h5); -- 2.27.0
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