linux-kernel - Re: [PATCH] netlink: Do not subscribe to non-existent groups

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Message-Id: <20180729.125106.426751224292004107.davem@davemloft.net>
Date:   Sun, 29 Jul 2018 12:51:06 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     dima@...sta.com
Cc:     linux-kernel@...r.kernel.org, herbert@...dor.apana.org.au,
        steffen.klassert@...unet.com, netdev@...r.kernel.org
Subject: Re: [PATCH] netlink: Do not subscribe to non-existent groups

From: Dmitry Safonov <dima@...sta.com>
Date: Fri, 27 Jul 2018 16:54:44 +0100

> Make ABI more strict about subscribing to group > ngroups.
> Code doesn't check for that and it looks bogus.
> (one can subscribe to non-existing group)
> Still, it's possible to bind() to all possible groups with (-1)
> 
> Cc: "David S. Miller" <davem@...emloft.net>
> Cc: Herbert Xu <herbert@...dor.apana.org.au>
> Cc: Steffen Klassert <steffen.klassert@...unet.com>
> Cc: netdev@...r.kernel.org
> Signed-off-by: Dmitry Safonov <dima@...sta.com>

Applied and queued up for -stable, thanks.