From: Miaoqian Lin linmq006@gmail.com

stable inclusion from stable-v4.19.235 commit 8609e29611befc4bfbe7a91bb50fc65ae72ff549 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IADGSM CVE: CVE-2022-48860

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...

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[ Upstream commit b19ab4b38b06aae12442b2de95ccf58b5dc53584 ]

This node pointer is returned by of_parse_phandle() with refcount incremented in this function. Calling of_node_put() to avoid the refcount leak. As the remove function do.

Fixes: 5cdaaa12866e ("net: emaclite: adding MDIO and phy lib support") Signed-off-by: Miaoqian Lin linmq006@gmail.com Reviewed-by: Andrew Lunn andrew@lunn.ch Link: https://lore.kernel.org/r/20220308024751.2320-1-linmq006@gmail.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Dong Chenchen dongchenchen2@huawei.com --- drivers/net/ethernet/xilinx/xilinx_emaclite.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/xilinx/xilinx_emaclite.c b/drivers/net/ethernet/xilinx/xilinx_emaclite.c index edb2215f9993..23a4f9061072 100644 --- a/drivers/net/ethernet/xilinx/xilinx_emaclite.c +++ b/drivers/net/ethernet/xilinx/xilinx_emaclite.c @@ -1173,7 +1173,7 @@ static int xemaclite_of_probe(struct platform_device *ofdev) if (rc) { dev_err(dev, "Cannot register network device, aborting\n"); - goto error; + goto put_node; }

dev_info(dev, @@ -1181,6 +1181,8 @@ static int xemaclite_of_probe(struct platform_device *ofdev) (unsigned int __force)ndev->mem_start, lp->base_addr, ndev->irq); return 0;

+put_node: + of_node_put(lp->phy_node); error: free_netdev(ndev); return rc;