VYPR
← All advisories
Unrated severityNVD Advisory· Published May 21, 2024· Updated May 4, 2025

net: ethernet: fix potential use-after-free in ec_bhf_remove

CVE-2021-47235

Description

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.

Affected products

66

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

8

News mentions

0

No linked articles in our index yet.