High severity7.8NVD Advisory· Published May 21, 2024· Updated Jun 17, 2026

CVE-2021-47306

Description

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

net: fddi: fix UAF in fza_probe

fp is netdev private data and it cannot be used after free_netdev() call. Using fp after free_netdev() can cause UAF bug. Fix it by moving free_netdev() after error message.

TURBOchannel adapter")

Affected products

Linux/Kernelllm-fuzzy2 versions
(expand)+ 1 more
- (no CPE)
- (no CPE)range: 4.20

Patches

Vulnerability mechanics

References

git.kernel.org/stable/c/04b06716838bfc26742dbed3ae1d3697fe5317eenvdPatch
git.kernel.org/stable/c/bdfbb51f7a437ae8ea91317a5c133ec13adf3c47nvdPatch
git.kernel.org/stable/c/deb7178eb940e2c5caca1b1db084a69b2e59b4c9nvdPatch
git.kernel.org/stable/c/f33605908a9b6063525e9f68e62d739948c5fccfnvdPatch

News mentions

No linked articles in our index yet.

cvss	0.507
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000