7.8

CVE-2021-47306

net: fddi: fix UAF in fza_probe

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")
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.135
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.53
Linux ≫ Linux Kernel Version >= 5.11 < 5.13.5
Linux ≫ Linux Kernel Version5.14 Updaterc1
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.23% 0.137
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://git.kernel.org/stable/c/04b06716838bfc26742dbed3ae1d3697fe5317ee
Patch
https://git.kernel.org/stable/c/bdfbb51f7a437ae8ea91317a5c133ec13adf3c47
Patch
https://git.kernel.org/stable/c/deb7178eb940e2c5caca1b1db084a69b2e59b4c9
Patch
https://git.kernel.org/stable/c/f33605908a9b6063525e9f68e62d739948c5fccf
Patch