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Vulnerability of Linux kernel: buffer overflow via fbcon_redraw_softback

Synthesis of the vulnerability 

An attacker can trigger a buffer overflow via fbcon_redraw_softback() of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
Impacted products: Linux.
Severity of this bulletin: 2/4.
Creation date: 15/09/2020.
Références of this threat: CVE-2020-14390, VIGILANCE-VUL-33321.

Description of the vulnerability 

An attacker can trigger a buffer overflow via fbcon_redraw_softback() of the Lin...
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This cybersecurity alert impacts software or systems such as Linux.

Our Vigil@nce team determined that the severity of this weakness is medium.

The trust level is of type confirmed by the editor, with an origin of user shell.

A proof of concept or an attack tool is available, so your teams have to process this alert. An attacker with a technician ability can exploit this security weakness.

Solutions for this threat 

Patches for this vulnerability are not yet public.
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