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Vulnerability of Linux kernel: memory corruption via AArch64 Brk Top Byte

Synthesis of the vulnerability 

An attacker can trigger a memory corruption via AArch64 Brk Top Byte of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
Impacted systems: Fedora, Linux.
Severity of this alert: 2/4.
Creation date: 26/02/2020.
Références of this alert: CVE-2020-9391, FEDORA-2020-3cd64d683c, VIGILANCE-VUL-31679.

Description of the vulnerability 

An attacker can trigger a memory corruption via AArch64 Brk Top Byte of the Linu...
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This security vulnerability impacts software or systems such as Fedora, Linux.

Our Vigil@nce team determined that the severity of this computer weakness bulletin 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 specialist ability can exploit this security note.

Solutions for this threat 

This vulnerability workaround will be public soon.
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