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MEDIUM

CVE-2020-14331

CVSS v3

6.6

MEDIUM

EPSS Score

0.6 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2020-14331 Red Hat Product Security335 products fixed · 32 known affected

    kernel: kernel: buffer over write in vgacon_scroll

    kernel.src as a component of Red Hat Enterprise Linux 5 · kernel as a component of Red Hat Enterprise Linux 6 · kernel-abi-whitelists as a component of Red Hat Enterprise Linux 6

  • RHSA-2020:5023 Red Hat Product Security155 products fixed

    Red Hat Security Advisory: kernel security and bug fix update

  • RHSA-2020:5026 Red Hat Product Security30 products fixed

    Red Hat Security Advisory: kernel-rt security and bug fix update

  • RHSA-2020:4289 Red Hat Product Security30 products fixed

    Red Hat Security Advisory: kernel-rt security and bug fix update

  • RHSA-2020:4286 Red Hat Product Security120 products fixed

    Red Hat Security Advisory: kernel security and bug fix update

Full record on NVD

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, calling an ioctl VT_RESIZE, which causes an out-of-bounds write to occur. This flaw allows a local user with access to the VGA console to crash the system, potentially escalating their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Technical details

Published
2020-09-15

Frequently asked questions

What is CVE-2020-14331?

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, calling an ioctl VT_RESIZE, which causes an out-of-bounds write to occur. This flaw allows a local user with access to the VGA console to crash the system, potentially escalating their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Is CVE-2020-14331 actively exploited?

Active exploitation of CVE-2020-14331 has not been confirmed. Its EPSS score was 0.6% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-14331?

CVE-2020-14331 has a CVSS v3 base score of 6.6 (MEDIUM severity).

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