CVE-2020-14390
kernel: out-of-bounds write in fbcon_redraw_softback
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 15, 2020
Updated · October 9, 2026
Description
A flaw was found in the Linux kernel. When changing screen size, an out-of-bounds memory write can occur leading to memory corruption or a denial of service. Due to the nature of the flaw, privilege escalation cannot be fully ruled out.
Statement
Due to this flaw requiring a local user to trigger by using frame buffer fbcon, the impact has been rated as Low.
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 · 5.7CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
CWE-787 · Out-of-bounds Write