CVE-2021-47235

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Source

https://nvd.nist.gov/vuln/detail/CVE-2021-47235

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47235.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2021-47235

Related

Published

2024-05-21T15:15:12Z

Modified

2024-09-18T01:00:22Z

Summary

[none]

Details

In the Linux kernel, the following vulnerability has been resolved:

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

static void ecbhfremove(struct pcidev *dev) { ... struct ecbhfpriv *priv = netdevpriv(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 freenetdev(). It can cause use-after-free when accessing priv pointer. So, fix it by moving freenetdev() after pci_iounmap() calls.

References

Affected packages

Debian:11 / linux

Package

Name: linux
Purl: pkg:deb/debian/linux?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.10.46-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:12 / linux

Package

Name: linux
Purl: pkg:deb/debian/linux?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.10.46-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name: linux
Purl: pkg:deb/debian/linux?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.10.46-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}