Unverified Commit f86196bf authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
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!13982 [OLK-5.10]ipvlan: fix UAF after skb has been consumed by xdp generic 

Merge Pull Request from: @bitcoffee 
 
#IB82XT 

When XDP is used in ipvlan and SK_PASS is returned, the kernel crashes. 
 
Link:https://gitee.com/openeuler/kernel/pulls/13982

 

Reviewed-by: default avatarYue Haibing <yuehaibing@huawei.com>
Reviewed-by: default avatarLi Nan <linan122@huawei.com>
Signed-off-by: default avatarLi Nan <linan122@huawei.com>
parents 020e0507 b8228851

drivers/net/ipvlan/ipvlan_core.c

+2 −1
Original line number Diff line number Diff line
@@ -326,7 +326,8 @@ static int ipvlan_rcv_frame(struct ipvl_addr *addr, struct sk_buff **pskb, 
		goto go_network_stack;

	skb->dev = dev;

#ifdef CONFIG_XSK_MULTI_BUF

	xdp_ret = do_xdp_generic_multi(xdp_prog, &skb);

	xdp_ret = do_xdp_generic_multi(xdp_prog, pskb);

	skb = *pskb;

#else

	xdp_ret = do_xdp_generic(xdp_prog, skb);

#endif