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Vulnerability of Linux kernel: out-of-bounds memory reading via dm-ioctl.c

Synthesis of the vulnerability 

An attacker can force a read at an invalid address via dm-ioctl.c of the Linux kernel, in order to trigger a denial of service, or to obtain sensitive information.
Impacted systems: Linux.
Severity of this alert: 1/4.
Creation date: 29/03/2021.
Références of this alert: VIGILANCE-VUL-34955.

Description of the vulnerability 

An attacker can force a read at an invalid address via dm-ioctl.c of the Linux kernel, in order to trigger a denial of service, or to obtain sensitive information.
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This vulnerability announce impacts software or systems such as Linux.

Our Vigil@nce team determined that the severity of this cybersecurity threat is low.

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

An attacker with a expert ability can exploit this computer threat bulletin.

Solutions for this threat 

Linux kernel: version 5.11.11.
The version 5.11.11 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 5.10.27.
The version 5.10.27 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 5.4.109.
The version 5.4.109 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 4.19.184.
The version 4.19.184 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.14.228.
The version 4.14.228 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.4.269.
The version 4.4.269 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: patch for dm-ioctl.c.
A patch is indicated in information sources.
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