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Vulnerability of Linux kernel: use after free via nosy_ioctl

Synthesis of the vulnerability 

An attacker can force the usage of a freed memory area via nosy_ioctl() of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
Vulnerable software: Linux.
Severity of this announce: 2/4.
Creation date: 07/04/2021.
Références of this computer vulnerability: CVE-2021-3483, VIGILANCE-VUL-35017.

Description of the vulnerability 

An attacker can force the usage of a freed memory area via nosy_ioctl() of the L...
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This cybersecurity bulletin impacts software or systems such as Linux.

Our Vigil@nce team determined that the severity of this cybersecurity weakness 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 computer vulnerability bulletin.

Solutions for this threat 

This vulnerability patch will be public soon.
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