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staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect()
commitb535917c51
upstream. The free_rtllib() function frees the "dev" pointer so there is use after free on the next line. Re-arrange things to avoid that. Fixes:66898177e7
("staging: rtl8192e: Fix unload/reload problem") Cc: stable <stable@vger.kernel.org> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/20211117072016.GA5237@kili Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 2 additions and 1 deletions
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@ -2551,13 +2551,14 @@ static void _rtl92e_pci_disconnect(struct pci_dev *pdev)
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free_irq(dev->irq, dev);
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priv->irq = 0;
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}
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free_rtllib(dev);
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if (dev->mem_start != 0) {
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iounmap((void __iomem *)dev->mem_start);
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release_mem_region(pci_resource_start(pdev, 1),
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pci_resource_len(pdev, 1));
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}
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free_rtllib(dev);
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} else {
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priv = rtllib_priv(dev);
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}
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