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Vulnerability of Xen: denial of service via HVM Soft-reset Management Daemon

Synthesis of the vulnerability 

An attacker, inside a guest system, can trigger a fatal error via HVM Soft-reset Management Daemon of Xen, in order to trigger a denial of service on the host system.
Impacted software: Fedora, SUSE Linux Enterprise Desktop, SLES, Xen.
Severity of this computer vulnerability: 2/4.
Creation date: 18/03/2021.
Références of this announce: CERTFR-2021-AVI-207, CVE-2021-28687, FEDORA-2021-0b784a4d02, FEDORA-2021-a468f36bbe, SUSE-SU-2021:1023-1, SUSE-SU-2021:1028-1, VIGILANCE-VUL-34882, XSA-368.

Description of the vulnerability 

An attacker, inside a guest system, can trigger a fatal error via HVM Soft-reset...
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This computer vulnerability announce impacts software or systems such as Fedora, SUSE Linux Enterprise Desktop, SLES, Xen.

Our Vigil@nce team determined that the severity of this cybersecurity bulletin 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 threat alert.

Solutions for this threat 

This vulnerability patch will be public soon.
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