From: Miaoqian Lin linmq006@gmail.com

mainline inclusion from mainline-v5.17-rc8 commit c9ffa3e2bc451816ce0295e40063514fabf2bd36 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IADGT8 CVE: CVE-2022-48859

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...

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This node pointer is returned by of_find_compatible_node() with refcount incremented. Calling of_node_put() to aovid the refcount leak.

Fixes: 501ef3066c89 ("net: marvell: prestera: Add driver for Prestera family ASIC devices") Signed-off-by: Miaoqian Lin linmq006@gmail.com Signed-off-by: David S. Miller davem@davemloft.net

Conflicts: drivers/net/ethernet/marvell/prestera/prestera_main.c [Did not backport 83216e3988cd1.] Signed-off-by: Liu Jian liujian56@huawei.com --- drivers/net/ethernet/marvell/prestera/prestera_main.c | 1 + 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/marvell/prestera/prestera_main.c b/drivers/net/ethernet/marvell/prestera/prestera_main.c index f406f5b517b0..e1e251f84c7d 100644 --- a/drivers/net/ethernet/marvell/prestera/prestera_main.c +++ b/drivers/net/ethernet/marvell/prestera/prestera_main.c @@ -480,6 +480,7 @@ static int prestera_switch_set_base_mac_addr(struct prestera_switch *sw) eth_random_addr(sw->base_mac); dev_info(prestera_dev(sw), "using random base mac address\n"); } + of_node_put(np);

return prestera_hw_switch_mac_set(sw, sw->base_mac); }