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Vulnerability of QEMU: use after free via mptsas_free_request

Synthesis of the vulnerability 

An attacker, inside a guest system, can force the usage of a freed memory area via mptsas_free_request() of QEMU, in order to trigger a denial of service, and possibly to run code on the host system.
Impacted systems: QEMU.
Severity of this alert: 2/4.
Creation date: 05/02/2021.
Références of this alert: CVE-2021-3392, VIGILANCE-VUL-34493.

Description of the vulnerability 

An attacker, inside a guest system, can force the usage of a freed memory area v...
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This weakness announce impacts software or systems such as QEMU.

Our Vigil@nce team determined that the severity of this 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 computer threat announce.

Solutions for this threat 

This vulnerability solution will be public soon.
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