CVE-2020-27418

2023-09-0215:35:33

redhat.com

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vulnerability

use-after-free

linux kernel

denial of service

privilege escalation

4.4 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

0.0004 Low

EPSS

Percentile

9.0%

JSON

A use-after-free vulnerability was found in the vgacon_invert_region in drivers/video/console/vgacon.c in the low-level VGA-based console driver in the Linux kernel. This flaw allows a local privileged attacker to crash the system due to a missing sanity check, causing a denial of service.

Mitigation

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.