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Vigil@nce - Linux kernel: NULL pointer dereference via Hyper-V Context

April 2021 by Vigil@nce

This bulletin was written by Vigil@nce : https://vigilance.fr/computer-vulnerability

SYNTHESIS OF THE VULNERABILITY

Impacted products: Fedora, Linux.

Severity: 1/4.

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

Provenance: user shell.

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

Creation date: 07/04/2021.

DESCRIPTION OF THE VULNERABILITY

An attacker, inside a guest system, can force a NULL pointer to be
dereferenced via Hyper-V Context of the Linux kernel, in order to
trigger a denial of service on the host system.

ACCESS TO THE FULL VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/Linux-kernel-NULL-pointer-dereference-via-Hyper-V-Context-35020


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