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Groups > linux.kernel > #1628960

[PATCH 1/1] wan: pc300too: abort path on failure

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From: Pan Bian <bianpan2016@163.com>

In function pc300_pci_init_one(), on the ioremap error path, function
pc300_pci_remove_one() is called to free the allocated memory. However,
the path is not terminated, and the freed memory will be used later,
resulting in use-after-free bugs. This path fixes the bug.

Signed-off-by: Pan Bian <bianpan2016@163.com>
---
 drivers/net/wan/pc300too.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wan/pc300too.c b/drivers/net/wan/pc300too.c
index e1dd1ec..b9b934b 100644
--- a/drivers/net/wan/pc300too.c
+++ b/drivers/net/wan/pc300too.c
@@ -346,6 +346,7 @@ static int pc300_pci_init_one(struct pci_dev *pdev,
 	    card->rambase == NULL) {
 		pr_err("ioremap() failed\n");
 		pc300_pci_remove_one(pdev);
+		return -ENOMEM;
 	}
 
 	/* PLX PCI 9050 workaround for local configuration register read bug */
-- 
1.9.1

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[PATCH 1/1] wan: pc300too: abort path on failure Pan Bian <bianpan201602@163.com> - 2017-04-23 11:40 +0200
  Re: [PATCH 1/1] wan: pc300too: abort path on failure David Miller <davem@davemloft.net> - 2017-04-24 22:00 +0200

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