netdev - [PATCH net] sfc: fix potential memleak in __ef100_hard_start

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]

Date:   Thu, 17 Nov 2022 15:50:09 +0800
From:   Zhang Changzhong <zhangchangzhong@...wei.com>
To:     Edward Cree <ecree.xilinx@...il.com>,
        Martin Habets <habetsm.xilinx@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        "Eric Dumazet" <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
CC:     Zhang Changzhong <zhangchangzhong@...wei.com>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH net] sfc: fix potential memleak in __ef100_hard_start_xmit()

The __ef100_hard_start_xmit() returns NETDEV_TX_OK without freeing skb
in error handling case, add dev_kfree_skb_any() to fix it.

Fixes: 51b35a454efd ("sfc: skeleton EF100 PF driver")
Signed-off-by: Zhang Changzhong <zhangchangzhong@...wei.com>
---
 drivers/net/ethernet/sfc/ef100_netdev.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/sfc/ef100_netdev.c b/drivers/net/ethernet/sfc/ef100_netdev.c
index 88fa295..ddcc325 100644
--- a/drivers/net/ethernet/sfc/ef100_netdev.c
+++ b/drivers/net/ethernet/sfc/ef100_netdev.c
@@ -218,6 +218,7 @@ netdev_tx_t __ef100_hard_start_xmit(struct sk_buff *skb,
 		   skb->len, skb->data_len, channel->channel);
 	if (!efx->n_channels || !efx->n_tx_channels || !channel) {
 		netif_stop_queue(net_dev);
+		dev_kfree_skb_any(skb);
 		goto err;
 	}
 
-- 
2.9.5