CVE-2020-25670: Use After Free
Published May 26, 2021
·Updated
A vulnerability was found in Linux Kernel where refcount leak in llcpsockbind() causing use-after-free which might lead to privilege escalations.
Affected Software
50 affected componentsFixes available
Linux Linux kernel>=3.6<4.4.267
Linux Linux kernel>=4.5<4.9.267
Linux Linux kernel>=4.10<4.14.231
Linux Linux kernel>=4.15<4.19.187
Linux Linux kernel>=4.20<5.4.112
Linux Linux kernel>=5.5<5.10.30
Linux Linux kernel>=5.11<5.11.14
Fedoraproject Fedora=32
Fedoraproject Fedora=33
Fedoraproject Fedora=34
NetApp Active Iq Unified Manager Vsphere
NetApp Cloud Backup
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
Debian Debian Linux=9.0
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
debian/linux
5.10.223-15.10.234-16.1.129-16.1.135-16.12.22-16.12.25-1
Remediation
Patch Available
Patch Available
Patch Available
Event History
May 26, 2021
CVE Published
via MITRE·10:28 AM
Data Sourced
via MITRE·10:28 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
Frequently Asked Questions
1
What is the severity of CVE-2020-25670?
CVE-2020-25670 is classified as a high severity vulnerability due to its potential for privilege escalation.
2
How do I fix CVE-2020-25670?
To mitigate CVE-2020-25670, update the Linux kernel to version 5.10.223-1 or later.
3
What systems are affected by CVE-2020-25670?
CVE-2020-25670 affects multiple versions of the Linux Kernel from 3.6 to 5.11, along with specific releases of Fedora and Debian Linux.
4
What type of vulnerability is CVE-2020-25670?
CVE-2020-25670 is a refcount leak vulnerability that leads to a use-after-free condition.
5
Is there any known exploit for CVE-2020-25670?
While there may not be a public exploit, the vulnerability's nature allows for potential privilege escalation when exploited.