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Date:   Tue, 22 Jan 2019 09:49:15 +0100
From:   Marcel Holtmann <>
To:     Myungho Jung <>
Cc:     Johan Hedberg <>,,
Subject: Re: [PATCH] Bluetooth: hci_uart: Check if socket buffer is ERR_PTR in

Hi Myungho,

> h4_recv_buf() callers store the return value to socket buffer and
> recursively pass the buffer to h4_recv_buf() without protection. So,
> ERR_PTR returned from h4_recv_buf() can be dereferenced, if called again
> before setting the socket buffer to NULL from previous error. Check if
> skb is ERR_PTR in h4_recv_buf().
> Reported-by:
> Signed-off-by: Myungho Jung <>
> ---
> drivers/bluetooth/h4_recv.h | 4 ++++
> drivers/bluetooth/hci_h4.c  | 4 ++++
> 2 files changed, 8 insertions(+)

patch has been applied to bluetooth-next tree.



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