linux-kernel - [PATCH net] net: ethernet: aeroflex: fix potential memory leak in greth_start_xmit

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-next>] [day] [month] [year] [list]

Message-ID: <20241011113908.43966-1-wanghai38@huawei.com>
Date: Fri, 11 Oct 2024 19:39:08 +0800
From: Wang Hai <wanghai38@...wei.com>
To: <andreas@...sler.com>, <davem@...emloft.net>, <edumazet@...gle.com>,
	<kuba@...nel.org>, <pabeni@...hat.com>, <kristoffer@...sler.com>
CC: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH net] net: ethernet: aeroflex: fix potential memory leak in greth_start_xmit_gbit()

The greth_start_xmit_gbit() returns NETDEV_TX_OK without freeing skb
in case of skb->len being too long, add dev_kfree_skb() to fix it.

Fixes: d4c41139df6e ("net: Add Aeroflex Gaisler 10/100/1G Ethernet MAC driver")
Signed-off-by: Wang Hai <wanghai38@...wei.com>
---
 drivers/net/ethernet/aeroflex/greth.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/aeroflex/greth.c b/drivers/net/ethernet/aeroflex/greth.c
index 27af7746d645..8f6835a710b9 100644
--- a/drivers/net/ethernet/aeroflex/greth.c
+++ b/drivers/net/ethernet/aeroflex/greth.c
@@ -484,6 +484,7 @@ greth_start_xmit_gbit(struct sk_buff *skb, struct net_device *dev)
 
 	if (unlikely(skb->len > MAX_FRAME_SIZE)) {
 		dev->stats.tx_errors++;
+		dev_kfree_skb(skb);
 		goto out;
 	}
 
-- 
2.17.1