CVE-2021-47235

linux: In the Linux kernel, the following vulnerability has been resolved: net: ethernet: fix potential use-after-free in e...

CVE-2021-47235 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47235, released May 21, 2024. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.8
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0023
13th percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
linux · Debian 12.15 (bookworm) 5.10.46-1 DEBIAN-CVE-2021-47235 May 21, 2024
linux · Debian 13.5 (trixie) 5.10.46-1 DEBIAN-CVE-2021-47235 May 21, 2024
linux · Debian 14 5.10.46-1 DEBIAN-CVE-2021-47235 May 21, 2024

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