Vigil@nce - Xen, Linux: denial of service via Map Foreign Pages
May 2021 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2
SYNTHESIS OF THE VULNERABILITY
Impacted products: Linux, Xen.
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: 04/03/2021.
DESCRIPTION OF THE VULNERABILITY
An attacker, inside a guest system, can trigger a fatal error via
Map Foreign Pages of Xen with Linux, 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-Map-Foreign-Pages-34751