CVE-2020-14390

A flaw was found in the Linux kernel in versions before 5.9-rc6. 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.

CVSS 3.1

5.6CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H

EPSS

0.4% chance of exploitation in the next 30 days; higher than 28% of CVEs (scores of 2026-10-25)

CWE

CWE-787

Published

2020-09-18

Modified

2026-10-08

Record from

the NVD, synced 2026-10-19

Affected

• debian:debian_linux
• linux:linux_kernel

References

• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00001.html
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html
• https://bugzilla.redhat.com/show_bug.cgi?id=1876788
• https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html
• https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html

Check your stackJSON