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Vulnerability of Xen, Linux: assertion error via Linux Mapping Error

Synthesis of the vulnerability 

An attacker, inside a guest system, can force an assertion error via Linux Mapping Error of Xen, in order to trigger a denial of service on the host system.
Vulnerable products: XenServer, Fedora, Linux.
Severity of this weakness: 2/4.
Creation date: 16/02/2021.
Références of this bulletin: CERTFR-2021-AVI-152, CTX296603, CVE-2021-26931, FEDORA-2021-7143aca8cb, FEDORA-2021-8d45d297c6, VIGILANCE-VUL-34590, XSA-362.

Description of the vulnerability 

An attacker, inside a guest system, can force an assertion error via Linux Mappi...
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This weakness note impacts software or systems such as XenServer, Fedora, Linux.

Our Vigil@nce team determined that the severity of this threat note 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 weakness.

Solutions for this threat 

Patches for this vulnerability are not yet public.
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