Unverified Commit ca174c5e authored Apr 28, 2024 by openeuler-ci-bot Committed by Gitee Apr 28, 2024

!6640 hsr: Fix uninit-value access in hsr_get_node()

Merge Pull Request from: @ci-robot 
 
PR sync from: Liu Jian <liujian56@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/34SDHXIIV2FW3U4VLXL356WE3AFDPBAF/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9HJXK 
 
Link:https://gitee.com/openeuler/kernel/pulls/6640

 

Reviewed-by: Yue Haibing <yuehaibing@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>

parents a37954d8 3132793f

net/hsr/hsr_framereg.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -237,6 +237,10 @@ struct hsr_node hsr_get_node(struct hsr_port port, struct list_head *node_db,
		*/
		if (ethhdr->h_proto == htons(ETH_P_PRP) \|\|
		ethhdr->h_proto == htons(ETH_P_HSR)) {
		/* Check if skb contains hsr_ethhdr */
		if (skb->mac_len < sizeof(struct hsr_ethhdr))
		return NULL;

		/* Use the existing sequence_nr from the tag as starting point
		* for filtering duplicate frames.
		*/