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Vulnerability of Linux kernel: use after free via cgroups no_refcnt

Synthesis of the vulnerability 

An attacker can force the usage of a freed memory area via cgroups no_refcnt of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
Vulnerable systems: Linux.
Severity of this threat: 2/4.
Creation date: 10/09/2020.
Références of this weakness: CVE-2020-25220, VIGILANCE-VUL-33296.

Description of the vulnerability 

An attacker can force the usage of a freed memory area via cgroups no_refcnt of ...
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This computer threat impacts software or systems such as Linux.

Our Vigil@nce team determined that the severity of this computer vulnerability alert is medium.

The trust level is of type confirmed by the editor, with an origin of user shell.

An attacker with a expert ability can exploit this cybersecurity weakness.

Solutions for this threat 

This vulnerability solution will be public soon.
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