CVE-2020-8649
kernel: invalid read location in vgacon_invert_region function in drivers/video/console/vgacon.c
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · January 30, 2020
Updated · June 28, 2026
Description
A flaw was found in the Linux kernel’s implementation of the invert video code on VGA consoles when a local attacker attempts to resize the console. An out-of-bounds read can occur, leaking information to the console.
Statement
This flaw is rated as a having Moderate impact, it is an infoleak that is written to the screen.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
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.
CVSS / CWE
CVSS 3.1 · 5.9CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE-416 · Use After Free