linux-kernel - Re: [PATCH v4.4/bluetooth 1/2] Bluetooth: Consolidate encryption handling in hci_encrypt

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Message-ID: <20201015120254.GA3958402@kroah.com>
Date:   Thu, 15 Oct 2020 14:02:54 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     "Hans-Christian Egtvedt (hegtvedt)" <hegtvedt@...co.com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Luiz Augusto von Dentz <luiz.von.dentz@...el.com>,
        Marcel Holtmann <marcel@...tmann.org>
Subject: Re: [PATCH v4.4/bluetooth 1/2] Bluetooth: Consolidate encryption
 handling in hci_encrypt_cfm

On Thu, Oct 15, 2020 at 11:18:39AM +0000, Hans-Christian Egtvedt (hegtvedt) wrote:
> On 15/10/2020 11:57, Greg KH wrote:
> > On Thu, Oct 15, 2020 at 09:43:32AM +0200, Hans-Christian Noren Egtvedt wrote:
> >> From: Luiz Augusto von Dentz <luiz.von.dentz@...el.com>
> >>
> >> This makes hci_encrypt_cfm calls hci_connect_cfm in case the connection
> >> state is BT_CONFIG so callers don't have to check the state.
> >>
> >> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@...el.com>
> >> Signed-off-by: Marcel Holtmann <marcel@...tmann.org>
> >> (cherry picked from commit 3ca44c16b0dcc764b641ee4ac226909f5c421aa3)
> > 
> > This is only in 5.8, what about all the other stable kernels?
> > 
> >> (cherry picked from commit 0a60996c7fa7010ea00d9b62fb6996d908a01ead)
> > 
> > Where is this commit from?  I don't see it in Linus's tree.
> 
> Ops, my bad, I have a Linux 4.9 branch, which also includes the Android
> 4.9 kernel changes from Google. And since I noticed the patches in my
> (merged from Android latest) linux-4.9.y branch, I thought the patches
> were applied through all stable releases 4.9 and up.

I just looked at the google common android trees, and do not see this
commit in the android-4.9-q branch.  What branch are you seeing it in?

> >> ---
> >> AFAICT, fixing CVE 2020-10135 Bluetooth impersonation attacks have been
> >> left out for the 4.4 stable kernel. I cherry picked what I assume are
> >> the appropriate two patches missing from the 4.9 stable kernel. Please
> >> add them to upcoming 4.4 stable releases.
> > 
> > Why are you merging 2 commits together?  Please provide backports for
> > all stable kernels, if you want to see this in the 4.4.y tree.  We can
> > not have someone move from an older tree to a newer one and have a
> > regression.
> 
> Agreed, I have managed to trick myself into thinking the 4.4.y branch
> was left out, but I assume these patches are required for all LTS branches.

They are, but if you have copies of them, please feel free to share
them.

thanks,

greg k-h