netdev - Re: [PATCH net v4] net: airoha: Validate egress gdm port in airoha_ppe_foe_entry

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250402084434.GF214849@horms.kernel.org>
Date: Wed, 2 Apr 2025 09:44:34 +0100
From: Simon Horman <horms@...nel.org>
To: Lorenzo Bianconi <lorenzo@...nel.org>
Cc: Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org, netdev@...r.kernel.org
Subject: Re: [PATCH net v4] net: airoha: Validate egress gdm port in
 airoha_ppe_foe_entry_prepare()

On Tue, Apr 01, 2025 at 11:42:30AM +0200, Lorenzo Bianconi wrote:
> Dev pointer in airoha_ppe_foe_entry_prepare routine is not strictly
> a device allocated by airoha_eth driver since it is an egress device
> and the flowtable can contain even wlan, pppoe or vlan devices. E.g:
> 
> flowtable ft {
>         hook ingress priority filter
>         devices = { eth1, lan1, lan2, lan3, lan4, wlan0 }
>         flags offload                               ^
>                                                     |
>                      "not allocated by airoha_eth" --
> }
> 
> In this case airoha_get_dsa_port() will just return the original device
> pointer and we can't assume netdev priv pointer points to an
> airoha_gdm_port struct.
> Fix the issue validating egress gdm port in airoha_ppe_foe_entry_prepare
> routine before accessing net_device priv pointer.
> 
> Fixes: 00a7678310fe ("net: airoha: Introduce flowtable offload support")
> Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>
> ---
> Changes in v4:
> - Return bool in airoha_is_valid_gdm_port() instead of int
> - Link to v3: https://lore.kernel.org/r/20250331-airoha-validate-egress-gdm-port-v3-1-c14e6ba9733a@kernel.org

Thanks for the update.

Reviewed-by: Simon Horman <horms@...nel.org>