CVE-2020-25668: Race Condition
Published May 26, 2021
·Updated
A flaw was found in Linux Kernel because access to the global variable fgconsole is not properly synchronized leading to a use after free in confontop.
Affected Software
54 affected componentsFixes available
Linux Linux kernel<4.4.242
Linux Linux kernel>=4.5<4.9.242
Linux Linux kernel>=4.10<4.14.204
Linux Linux kernel>=4.15<4.19.155
Linux Linux kernel>=4.20<5.4.75
Linux Linux kernel>=5.5<5.9.5
Debian Debian Linux=9.0
NetApp Cloud Backup
NetApp Solidfire \& Hci Management Node
NetApp Solidfire Baseboard Management Controller Firmware
NetApp Solidfire Baseboard Management Controller
NetApp H410c Firmware
NetApp H410c
NetApp H300s Firmware
NetApp H300s
NetApp H500s Firmware
NetApp H500s
NetApp H700s Firmware
NetApp H700s
NetApp H300e Firmware
NetApp H300e
NetApp H500e Firmware
NetApp H500e
NetApp H700e Firmware
NetApp H700e
NetApp H410s Firmware
NetApp H410s
NetApp A250 Firmware
NetApp A250
NetApp 500f Firmware
NetApp 500f
All of the following
NetApp Solidfire Baseboard Management Controller Firmware
NetApp Solidfire Baseboard Management Controller
All of the following
NetApp H410c Firmware
NetApp H410c
All of the following
NetApp H300s Firmware
NetApp H300s
All of the following
NetApp H500s Firmware
NetApp H500s
All of the following
NetApp H700s Firmware
NetApp H700s
All of the following
NetApp H300e Firmware
NetApp H300e
All of the following
NetApp H500e Firmware
NetApp H500e
All of the following
NetApp H700e Firmware
NetApp H700e
All of the following
NetApp H410s Firmware
NetApp H410s
All of the following
NetApp A250 Firmware
NetApp A250
All of the following
NetApp 500f Firmware
NetApp 500f
debian/linux
5.10.223-15.10.234-16.1.129-16.1.135-16.12.25-16.12.27-1
Remediation
Patch Available
Patch Available
Patch Available
Patch Available
Event History
May 26, 2021
CVE Published
via MITRE·11:11 AM
Data Sourced
via MITRE·11:11 AM
DescriptionWeakness
Jan 11, 2024
Data Sourced
via Launchpad·11:46 PM
Description
Apr 28, 2025
Data Sourced
via Ubuntu·04:22 AM
RemedyDescriptionSeverityAffected Software
May 6, 2025
Data Sourced
via Debian·04:25 AM
DescriptionAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2020-25668?
CVE-2020-25668 has been classified as a medium severity vulnerability in the Linux Kernel.
2
How do I fix CVE-2020-25668?
To fix CVE-2020-25668, update the Linux Kernel to version 5.10.223-1 or later.
3
Which versions of the Linux Kernel are affected by CVE-2020-25668?
CVE-2020-25668 affects Linux Kernel versions up to 4.4.242 and several versions between 4.5 and 5.9.5.
4
What type of vulnerability is CVE-2020-25668?
CVE-2020-25668 is a use-after-free vulnerability that occurs due to improper synchronization.
5
Is there an exploit available for CVE-2020-25668?
While there may not be widely reported exploits specifically targeting CVE-2020-25668, the vulnerability poses a risk that could be leveraged by attackers.