Vulnerability record · CVE-2019-20636 · published 8 April 2020

CVE-2019-20636: Linux kernel out-of-bounds write vulnerability

Linux · Linux Kernel

In the Linux kernel before 5.4.12, drivers/input/input.c has out-of-bounds writes via a crafted keycode table, as demonstrated by input_set_keycode, aka CID-cb222aed03d7.

6.7 CVSS 3.1 Medium EPSS 0.40% · top 67.4% CWE-787 · Out-of-bounds write

6.7CVSS 3.1 base score, v2 7.2

0.40%EPSS exploitation probability, 30 days

NoNot in CISA KEV

18Affected product versions listed by NVD

12References

17 Jun 2026Last modified by NVD

Description

In the Linux kernel before 5.4.12, drivers/input/input.c has out-of-bounds writes via a crafted keycode table, as demonstrated by input_set_keycode, aka CID-cb222aed03d7.

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

Affected products

18 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Linux Kernel Linux NCloud Backup Netapp NFas 8300 Netapp NFas 8700 Netapp NFas A400 Netapp NFas Baseboard Management Controller A220 Netapp NFas Baseboard Management Controller A320 Netapp NFas Baseboard Management Controller A800 Netapp NFas Baseboard Management Controller C190 Netapp NH300s Netapp NH410s Netapp NH500s Netapp NH610c Netapp NH610s Netapp NH615c Netapp NH700s Netapp NSolidfire Netapp NSteelstore Cloud Integrated Storage Netapp

References

Link	Tags
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.12	Release NotesVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cb222aed03d798fc074be55e59d9a112338ee784	PatchVendor Advisory
https://github.com/torvalds/linux/commit/cb222aed03d798fc074be55e59d9a112338ee784	PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html	Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html	Mailing ListThird Party Advisory
https://security.netapp.com/advisory/ntap-20200430-0004/	Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.12	Release NotesVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cb222aed03d798fc074be55e59d9a112338ee784	PatchVendor Advisory
https://github.com/torvalds/linux/commit/cb222aed03d798fc074be55e59d9a112338ee784	PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html	Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html	Mailing ListThird Party Advisory
https://security.netapp.com/advisory/ntap-20200430-0004/	Third Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2019-20636), CISA KEV, FIRST EPSS (scores of 2026-10-16). This page is refreshed as NVD updates the record.