CVE-2021-43057: Use After Free
Published Oct 28, 2021
·Updated
An issue was discovered in the Linux kernel before 5.14.8. A use-after-free in selinuxptracetraceme (aka the SELinux handler for PTRACETRACEME) could be used by local attackers to cause memory corruption and escalate privileges, aka CID-a3727a8bac0a. This occurs because of an attempt to access the subjective credentials of another task.
Affected Software
34 affected componentsFixes available
Linux Linux kernel>=5.13<5.14.8
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 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 H410c Firmware
NetApp H410c
debian/linux
5.10.223-15.10.234-16.1.129-16.1.135-16.12.25-1
Remediation
Event History
Oct 28, 2021
CVE Published
via MITRE·03:36 AM
Data Sourced
via MITRE·03:36 AM
Description
Jan 12, 2024
Data Sourced
via Launchpad·12:01 AM
Description
Sep 16, 2024
Data Sourced
via Ubuntu·01:24 AM
RemedyDescriptionSeverityAffected Software
Apr 24, 2025
Data Sourced
via Debian·04:33 AM
DescriptionAffected Software
Frequently Asked Questions
1
Can CVE-2021-43057 be exploited remotely?
No, CVE-2021-43057 requires local access for exploitation, making it a local privilege escalation vulnerability.