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Vulnerability of Linux kernel: NULL pointer dereference via Hyper-V Context

Synthesis 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.
Impacted software: Fedora, Linux.
Severity of this computer vulnerability: 1/4.
Creation date: 07/04/2021.
Références of this announce: CVE-2021-30178, FEDORA-2021-57a7ba61f8, FEDORA-2021-e71c033f88, VIGILANCE-VUL-35020.

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.
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This cybersecurity weakness impacts software or systems such as Fedora, Linux.

Our Vigil@nce team determined that the severity of this security vulnerability is low.

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 vulnerability bulletin.

Solutions for this threat 

Linux kernel: patch for Hyper-V Context.
A patch is indicated in information sources.

Fedora 32-33: new kernel packages.
New packages are available:
  Fedora 32: kernel 5.11.13-100.fc32
  Fedora 33: kernel 5.11.13-200.fc33
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