e100, e1000, ixgb: Fix an impossible memory overwrite bug
We keep getting requests from people that think that this might be an exploitable hole where we would overwrite 4 bytes in the netdev struct if the pci name would exceed 15 characters. In reality this will never happen but we fix it anyway. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
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3 changed files with 3 additions and 3 deletions
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@ -2572,7 +2572,7 @@ static int __devinit e100_probe(struct pci_dev *pdev,
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#ifdef CONFIG_NET_POLL_CONTROLLER
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netdev->poll_controller = e100_netpoll;
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#endif
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strcpy(netdev->name, pci_name(pdev));
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strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
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nic = netdev_priv(netdev);
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nic->netdev = netdev;
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@ -759,7 +759,7 @@ e1000_probe(struct pci_dev *pdev,
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#ifdef CONFIG_NET_POLL_CONTROLLER
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netdev->poll_controller = e1000_netpoll;
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#endif
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strcpy(netdev->name, pci_name(pdev));
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strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
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netdev->mem_start = mmio_start;
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netdev->mem_end = mmio_start + mmio_len;
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@ -437,7 +437,7 @@ ixgb_probe(struct pci_dev *pdev,
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netdev->poll_controller = ixgb_netpoll;
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#endif
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strcpy(netdev->name, pci_name(pdev));
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strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
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netdev->mem_start = mmio_start;
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netdev->mem_end = mmio_start + mmio_len;
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netdev->base_addr = adapter->hw.io_base;
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