From: "Álvaro Fernández Rojas" <noltari@gmail.com>
To: florian.fainelli@broadcom.com, jonas.gorski@gmail.com,
dgcbueu@gmail.com, andrew@lunn.ch, olteanv@gmail.com,
davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
pabeni@redhat.com, horms@kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: "Álvaro Fernández Rojas" <noltari@gmail.com>
Subject: [PATCH] net: dsa: tag_brcm: legacy: fix pskb_may_pull length
Date: Thu, 29 May 2025 14:44:06 +0200 [thread overview]
Message-ID: <20250529124406.2513779-1-noltari@gmail.com> (raw)
BRCM_LEG_PORT_ID was incorrectly used for pskb_may_pull length.
The correct check is BRCM_LEG_TAG_LEN + VLAN_HLEN, or 10 bytes.
Fixes: 964dbf186eaa ("net: dsa: tag_brcm: add support for legacy tags")
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
net/dsa/tag_brcm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/dsa/tag_brcm.c b/net/dsa/tag_brcm.c
index 8c3c068728e5..fe75821623a4 100644
--- a/net/dsa/tag_brcm.c
+++ b/net/dsa/tag_brcm.c
@@ -257,7 +257,7 @@ static struct sk_buff *brcm_leg_tag_rcv(struct sk_buff *skb,
int source_port;
u8 *brcm_tag;
- if (unlikely(!pskb_may_pull(skb, BRCM_LEG_PORT_ID)))
+ if (unlikely(!pskb_may_pull(skb, BRCM_LEG_TAG_LEN + VLAN_HLEN)))
return NULL;
brcm_tag = dsa_etype_header_pos_rx(skb);
--
2.39.5
next reply other threads:[~2025-05-29 12:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-29 12:44 Álvaro Fernández Rojas [this message]
2025-05-29 21:46 ` [PATCH] net: dsa: tag_brcm: legacy: fix pskb_may_pull length Florian Fainelli
2025-05-31 2:30 ` patchwork-bot+netdevbpf
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