CVE-2021-47235 (GCVE-0-2021-47235)
Vulnerability from cvelistv5
Published
2024-05-21 14:19
Modified
2026-05-11 13:50
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: ethernet: fix potential use-after-free in ec_bhf_remove static void ec_bhf_remove(struct pci_dev *dev) { ... struct ec_bhf_priv *priv = netdev_priv(net_dev); unregister_netdev(net_dev); free_netdev(net_dev); pci_iounmap(dev, priv->dma_io); pci_iounmap(dev, priv->io); ... } priv is netdev private data, but it is used after free_netdev(). It can cause use-after-free when accessing priv pointer. So, fix it by moving free_netdev() after pci_iounmap() calls.
References
Impacted products
Vendor Product Version
Linux Linux Version: 6af55ff52b02d492d45db88df3e461fa51a6f753
Version: 6af55ff52b02d492d45db88df3e461fa51a6f753
Version: 6af55ff52b02d492d45db88df3e461fa51a6f753
Version: 6af55ff52b02d492d45db88df3e461fa51a6f753
Version: 6af55ff52b02d492d45db88df3e461fa51a6f753
Version: 6af55ff52b02d492d45db88df3e461fa51a6f753
Version: 6af55ff52b02d492d45db88df3e461fa51a6f753
Version: 6af55ff52b02d492d45db88df3e461fa51a6f753
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