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Vulnerability of Xen, Linux: denial of service via Linux Mapping Error

Synthesis of the vulnerability 

An attacker, inside a guest system, can trigger a fatal error via Linux Mapping Error of Xen, in order to trigger a denial of service on the host system.
Impacted systems: XenServer, Fedora, FreeBSD, Linux.
Severity of this alert: 2/4.
Creation date: 16/02/2021.
Références of this alert: CERTFR-2021-AVI-152, CTX296603, CVE-2021-26932, FEDORA-2021-7143aca8cb, FEDORA-2021-8d45d297c6, FreeBSD-SA-21:06.xen, VIGILANCE-VUL-34589, XSA-361.

Description of the vulnerability 

An attacker, inside a guest system, can trigger a fatal error via Linux Mapping ...
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This computer threat announce impacts software or systems such as XenServer, Fedora, FreeBSD, Linux.

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

Solutions for this threat 

Fixes for this vulnerability are not yet public.
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