linux-kernel - Re: [PATCH net] batman-adv: Do not get eth header before batadv_check_management

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Message-ID: <10396914.nUPlyArG6x@sven-l14>
Date:   Fri, 28 Jul 2023 15:49:46 +0200
From:   Sven Eckelmann <sven@...fation.org>
To:     Marek Lindner <mareklindner@...mailbox.ch>,
        Simon Wunderlich <sw@...onwunderlich.de>,
        Antonio Quartulli <a@...table.cc>,
        Remi Pommarel <repk@...plefau.lt>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        b.a.t.m.a.n@...ts.open-mesh.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Remi Pommarel <repk@...plefau.lt>
Subject: Re: [PATCH net] batman-adv: Do not get eth header before
 batadv_check_management_packet

On Fri, 28 Jul 2023 15:38:50 +0200, Remi Pommarel wrote:
> If received skb in batadv_v_elp_packet_recv or batadv_v_ogm_packet_recv
> is either cloned or non linearized then its data buffer will be
> reallocated by batadv_check_management_packet when skb_cow or
> skb_linearize get called. Thus geting ethernet header address inside
> skb data buffer before batadv_check_management_packet had any chance to
> reallocate it could lead to the following kernel panic:
> 
> [...]

Applied, thanks!

[1/1] batman-adv: Do not get eth header before batadv_check_management_packet
      commit: eac27a41ab641de074655d2932fc7f8cdb446881

Kind regards,
	Sven

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