netdev - Re: [PATCH] net: fix NULL ptr dereference in nl802154_del_llsec

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Message-ID: <CAB_54W6qaZZ-wwJ_JEuBwYywu5RSXNuyE9o6XeizRLgEwo=uvw@mail.gmail.com>
Date:   Sun, 4 Apr 2021 20:37:00 -0400
From:   Alexander Aring <alex.aring@...il.com>
To:     Pavel Skripkin <paskripkin@...il.com>
Cc:     Stefan Schmidt <stefan@...enfreihafen.org>,
        "David S. Miller" <davem@...emloft.net>,
        linux-wpan - ML <linux-wpan@...r.kernel.org>,
        "open list:NETWORKING [GENERAL]" <netdev@...r.kernel.org>,
        kernel list <linux-kernel@...r.kernel.org>,
        syzbot+ac5c11d2959a8b3c4806@...kaller.appspotmail.com
Subject: Re: [PATCH] net: fix NULL ptr dereference in nl802154_del_llsec_key

Hi,

On Sat, 3 Apr 2021 at 11:18, Pavel Skripkin <paskripkin@...il.com> wrote:
>
> syzbot reported NULL ptr dereference in nl802154_del_llsec_key()[1]
> The problem was in case of info->attrs[NL802154_ATTR_SEC_KEY] == NULL.
> nla_parse_nested_deprecated()[2] doesn't check this condition before calling
> nla_len()[3]
>

this is already fixed in the same way just not in net yet.

- Alex