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Vulnerability of Linux kernel: use after free

Synthesis of the vulnerability 

An attacker can force the usage of a freed memory area of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
Impacted software: Linux, Ubuntu.
Severity of this computer vulnerability: 1/4.
Creation date: 19/05/2020.
Références of this announce: CERTFR-2020-AVI-300, CERTFR-2020-AVI-307, CERTFR-2020-AVI-312, CVE-2020-12657, USN-4363-1, USN-4367-1, USN-4367-2, USN-4368-1, USN-4369-1, USN-4369-2, VIGILANCE-VUL-32296.

Description of the vulnerability 

An attacker can force the usage of a freed memory area of the Linux kernel, in o...
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This vulnerability alert impacts software or systems such as Linux, Ubuntu.

Our Vigil@nce team determined that the severity of this computer weakness alert is low.

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.

Solutions for this threat 

Workarounds for this vulnerability are not yet public.
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