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Vigil@nce - Xen, Linux: denial of service via Linux Mapping Error

April 2021 by Vigil@nce

This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2

SYNTHESIS OF THE VULNERABILITY

Impacted products: XenServer, Debian, Fedora, FreeBSD, Linux,
openSUSE Leap, SUSE Linux Enterprise Desktop, SLES.

Severity: 2/4.

Consequences: denial of service on server, denial of service on
service.

Provenance: user shell.

Confidence: confirmed by the editor (5/5).

Creation date: 16/02/2021.

DESCRIPTION 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.

ACCESS TO THE FULL VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/Xen-Linux-denial-of-service-via-Linux-Mapping-Error-34589


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