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Bluetooth: hci_h5: fix memory leak in h5_close

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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: ce945552fd ("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>
This commit is contained in:
Anant Thazhemadam 2020-10-16 18:44:47 +05:30 committed by Marcel Holtmann
parent cca342d98b
commit 855af2d74c
1 changed files with 3 additions and 0 deletions
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3
drivers/bluetooth/hci_h5.c
View file

@ -245,6 +245,9 @@ static int h5_close(struct hci_uart *hu)
skb_queue_purge(&h5->rel); skb_queue_purge(&h5->rel);
skb_queue_purge(&h5->unrel); skb_queue_purge(&h5->unrel);
kfree_skb(h5->rx_skb);
h5->rx_skb = NULL;
if (h5->vnd && h5->vnd->close) if (h5->vnd && h5->vnd->close)
h5->vnd->close(h5); h5->vnd->close(h5);