BlackTreeIndependent security intelligence
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Full vulnerability report · 2020
CVE-2019-20636High confidence

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

n/a · n/a

6.7MediumCVSS 3.1
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
Distribution package intelligence

Ubuntu vendor package status

Canonical’s release and source-package findings are shown separately from local repository availability.

1 package state
Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Ubuntu releaseSource packageVendor stateFixed versionEvidence
Ubuntu 24.04 LTSnoble · standard archivelinux-raspi-realtimeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2019-11175

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
01

What, why and how

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.

What

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.

Why

A bounds error lets data be written beyond the intended memory region, potentially corrupting control data.

How

An attacker operating through local access may attempt exploitation with elevated privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

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.

Why

A bounds error lets data be written beyond the intended memory region, potentially corrupting control data.

How

An attacker operating through local access may attempt exploitation with elevated privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
local access → Out-of-bounds Write → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Local
Privileges required
High: elevated access is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-787

CWE-787: Out-of-bounds Write. The product writes data past the end, or before the beginning, of the intended buffer.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRHighPrivileges required: The attacker needs elevated or administrative privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
CWE-787
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

CERT-FR · French · CERTFR-2022-AVI-267Multiples vulnérabilités dans Juniper Networks Junos Space

d?id=CVE-2019-19534 Référence CVE CVE-2019-19537 https://www.cve.org/CVERecord?id=CVE-2019-19537 Référence CVE CVE-2019-19767 https://www.cve.org/CVERecord?id=CVE-2019-19767 Référence CVE CVE-2019-19807 https://www.cve.org/CVERecord?id=CVE-2019-19807 Référence CVE CVE-2019-20054 https://www.cve.org/CVERecord?id=CVE-2019-20054 Référence CVE CVE-2019-20095 https://www.cve.org/CVERecord?id=CVE-2019-20095 Référence CVE CVE-2019-20382 https://www.cve.org/CVERecord?id=CVE-2019-20382 Référence CVE CVE-2019-20386 https://www.cve.org/CVERecord?id=CVE-2019-20386 Référence CVE CVE-2019-20485 https://www.cve.org/CVERecord?id=CVE-2019-20485 Référence CVE CVE-2019-20636 https://www.cve.org/CVERecord?id=CVE-2019-20636 Référence CVE CVE-2019-20811 https://www.cve.org/CVERecord?id=CVE-2019-20811 Référence CVE CVE-2019-20907 https://www.cve.org/CVERecord?id=CVE-2019-20907 Référence CVE CVE-2019-3820 https://www.cve.org/CVERecord?id=CVE-2019-3820 Référence CVE CVE-2019-3840 https://www.cve.org/CVERecord?id=CVE-2019-3840 Référence CVE CVE-2019-3890 https://www.cve.org/CVERecord?id=CVE-2019-3890 Référence CVE CVE-2019-3901 https://www.cve.org/CVERecord?id=CVE-2019-3901 Référence CVE CVE-2019-5010 https://www.cve.org/CVERecord?id=CVE-2019-5010 Référence CVE CVE-2019-5094 https://www.cve.org/CVERecord?id=CVE-2019-50

Official advisory
CERT-FR · French · CERTFR-2021-AVI-589Multiples vulnérabilités dans Juniper Junos Space Log Collector

d?id=CVE-2019-19523 Référence CVE CVE-2019-19524 https://www.cve.org/CVERecord?id=CVE-2019-19524 Référence CVE CVE-2019-19530 https://www.cve.org/CVERecord?id=CVE-2019-19530 Référence CVE CVE-2019-19537 https://www.cve.org/CVERecord?id=CVE-2019-19537 Référence CVE CVE-2019-19807 https://www.cve.org/CVERecord?id=CVE-2019-19807 Référence CVE CVE-2019-19956 https://www.cve.org/CVERecord?id=CVE-2019-19956 Référence CVE CVE-2019-20054 https://www.cve.org/CVERecord?id=CVE-2019-20054 Référence CVE CVE-2019-20095 https://www.cve.org/CVERecord?id=CVE-2019-20095 Référence CVE CVE-2019-20388 https://www.cve.org/CVERecord?id=CVE-2019-20388 Référence CVE CVE-2019-20636 https://www.cve.org/CVERecord?id=CVE-2019-20636 Référence CVE CVE-2019-20907 https://www.cve.org/CVERecord?id=CVE-2019-20907 Référence CVE CVE-2019-25013 https://www.cve.org/CVERecord?id=CVE-2019-25013 Référence CVE CVE-2019-5482 https://www.cve.org/CVERecord?id=CVE-2019-5482 Référence CVE CVE-2019-8675 https://www.cve.org/CVERecord?id=CVE-2019-8675 Référence CVE CVE-2019-8696 https://www.cve.org/CVERecord?id=CVE-2019-8696 Référence CVE CVE-2020-10543 https://www.cve.org/CVERecord?id=CVE-2020-10543 Référence CVE CVE-2020-10878 https://www.cve.org/CVERecord?id=CVE-2020-10878 Référence CVE CVE-2020-12243 https://www.cve.org/CVERecord?id=CVE-20

Official advisory
CERT-FR · French · CERTFR-2021-AVI-005Multiples vulnérabilités dans le noyau Linux de Red Hat

De multiples vulnérabilités ont été découvertes dans le noyau Linux de Red Hat. Certaines d'entre elles permettent à un attaquant de provoquer un déni de service, une atteinte à l'intégrité des données et une atteinte à la confidentialité des données.

Official advisory
CERT-FR · French · CERTFR-2020-AVI-841Multiples vulnérabilités dans le noyau Linux de Red Hat

De multiples vulnérabilités ont été découvertes dans le noyau Linux de Red Hat. Certaines d'entre elles permettent à un attaquant de provoquer un problème de sécurité non spécifié par l'éditeur, un déni de service à distance et une atteinte à l'intégrité des données.

Official advisory
CERT-FR · French · CERTFR-2020-AVI-823Multiples vulnérabilités dans le noyau Linux de RedHat

De multiples vulnérabilités ont été découvertes dans le noyau Linux de Red Hat. Certaines d'entre elles permettent à un attaquant de provoquer un déni de service, une atteinte à l'intégrité des données et une atteinte à la confidentialité des données.

Official advisory
CERT-FR · French · CERTFR-2020-AVI-710Multiples vulnérabilités dans le noyau Linux de Red Hat

d?id=CVE-2019-19332 Référence CVE CVE-2019-19447 https://www.cve.org/CVERecord?id=CVE-2019-19447 Référence CVE CVE-2019-19524 https://www.cve.org/CVERecord?id=CVE-2019-19524 Référence CVE CVE-2019-19533 https://www.cve.org/CVERecord?id=CVE-2019-19533 Référence CVE CVE-2019-19537 https://www.cve.org/CVERecord?id=CVE-2019-19537 Référence CVE CVE-2019-19543 https://www.cve.org/CVERecord?id=CVE-2019-19543 Référence CVE CVE-2019-19767 https://www.cve.org/CVERecord?id=CVE-2019-19767 Référence CVE CVE-2019-19770 https://www.cve.org/CVERecord?id=CVE-2019-19770 Référence CVE CVE-2019-20054 https://www.cve.org/CVERecord?id=CVE-2019-20054 Référence CVE CVE-2019-20636 https://www.cve.org/CVERecord?id=CVE-2019-20636 Référence CVE CVE-2019-9455 https://www.cve.org/CVERecord?id=CVE-2019-9455 Référence CVE CVE-2019-9458 https://www.cve.org/CVERecord?id=CVE-2019-9458 Référence CVE CVE-2020-0305 https://www.cve.org/CVERecord?id=CVE-2020-0305 Référence CVE CVE-2020-10732 https://www.cve.org/CVERecord?id=CVE-2020-10732 Référence CVE CVE-2020-10751 https://www.cve.org/CVERecord?id=CVE-2020-10751 Référence CVE CVE-2020-10774 https://www.cve.org/CVERecord?id=CVE-2020-10774 Référence CVE CVE-2020-10942 https://www.cve.org/CVERecord?id=CVE-2020-10942 Référence CVE CVE-2020-11565 https://www.cve.org/CVERecord?id=CVE-20

Official advisory
CERT-FR · French · CERTFR-2020-AVI-612Multiples vulnérabilités dans le noyau Linux de Red Hat

d?id=CVE-2019-19523 Référence CVE CVE-2019-19524 https://www.cve.org/CVERecord?id=CVE-2019-19524 Référence CVE CVE-2019-19530 https://www.cve.org/CVERecord?id=CVE-2019-19530 Référence CVE CVE-2019-19534 https://www.cve.org/CVERecord?id=CVE-2019-19534 Référence CVE CVE-2019-19537 https://www.cve.org/CVERecord?id=CVE-2019-19537 Référence CVE CVE-2019-19767 https://www.cve.org/CVERecord?id=CVE-2019-19767 Référence CVE CVE-2019-19807 https://www.cve.org/CVERecord?id=CVE-2019-19807 Référence CVE CVE-2019-20054 https://www.cve.org/CVERecord?id=CVE-2019-20054 Référence CVE CVE-2019-20095 https://www.cve.org/CVERecord?id=CVE-2019-20095 Référence CVE CVE-2019-20636 https://www.cve.org/CVERecord?id=CVE-2019-20636 Référence CVE CVE-2019-9454 https://www.cve.org/CVERecord?id=CVE-2019-9454 Référence CVE CVE-2019-9458 https://www.cve.org/CVERecord?id=CVE-2019-9458 Référence CVE CVE-2020-10690 https://www.cve.org/CVERecord?id=CVE-2020-10690 Référence CVE CVE-2020-10732 https://www.cve.org/CVERecord?id=CVE-2020-10732 Référence CVE CVE-2020-10742 https://www.cve.org/CVERecord?id=CVE-2020-10742 Référence CVE CVE-2020-10751 https://www.cve.org/CVERecord?id=CVE-2020-10751 Référence CVE CVE-2020-10942 https://www.cve.org/CVERecord?id=CVE-2020-10942 Référence CVE CVE-2020-11565 https://www.cve.org/CVERecord?id=CVE-

Official advisory
CERT-FR · French · CERTFR-2020-AVI-415Multiples vulnérabilités dans le noyau Linux de Red Hat

d?id=CVE-2019-11811 Référence CVE CVE-2019-13233 https://www.cve.org/CVERecord?id=CVE-2019-13233 Référence CVE CVE-2019-14821 https://www.cve.org/CVERecord?id=CVE-2019-14821 Référence CVE CVE-2019-15916 https://www.cve.org/CVERecord?id=CVE-2019-15916 Référence CVE CVE-2019-15917 https://www.cve.org/CVERecord?id=CVE-2019-15917 Référence CVE CVE-2019-18660 https://www.cve.org/CVERecord?id=CVE-2019-18660 Référence CVE CVE-2019-18808 https://www.cve.org/CVERecord?id=CVE-2019-18808 Référence CVE CVE-2019-19062 https://www.cve.org/CVERecord?id=CVE-2019-19062 Référence CVE CVE-2019-19767 https://www.cve.org/CVERecord?id=CVE-2019-19767 Référence CVE CVE-2019-20636 https://www.cve.org/CVERecord?id=CVE-2019-20636 Référence CVE CVE-2019-3901 https://www.cve.org/CVERecord?id=CVE-2019-3901 Référence CVE CVE-2019-9458 https://www.cve.org/CVERecord?id=CVE-2019-9458 Référence CVE CVE-2020-0543 https://www.cve.org/CVERecord?id=CVE-2020-0543 Référence CVE CVE-2020-10720 https://www.cve.org/CVERecord?id=CVE-2020-10720 Référence CVE CVE-2020-11565 https://www.cve.org/CVERecord?id=CVE-2020-11565 Référence CVE CVE-2020-12653 https://www.cve.org/CVERecord?id=CVE-2020-12653 Référence CVE CVE-2020-12654 https://www.cve.org/CVERecord?id=CVE-2020-12654 Référence CVE CVE-2020-12888 https://www.cve.org/CVERecord?id=CVE-20

Official advisory
CERT-FR · French · CERTFR-2020-AVI-411Multiples vulnérabilités dans Google Android

d?id=CVE-2019-10580 Référence CVE CVE-2019-14037 https://www.cve.org/CVERecord?id=CVE-2019-14037 Référence CVE CVE-2019-14093 https://www.cve.org/CVERecord?id=CVE-2019-14093 Référence CVE CVE-2019-14100 https://www.cve.org/CVERecord?id=CVE-2019-14100 Référence CVE CVE-2019-14101 https://www.cve.org/CVERecord?id=CVE-2019-14101 Référence CVE CVE-2019-14123 https://www.cve.org/CVERecord?id=CVE-2019-14123 Référence CVE CVE-2019-14124 https://www.cve.org/CVERecord?id=CVE-2019-14124 Référence CVE CVE-2019-14130 https://www.cve.org/CVERecord?id=CVE-2019-14130 Référence CVE CVE-2019-18282 https://www.cve.org/CVERecord?id=CVE-2019-18282 Référence CVE CVE-2019-20636 https://www.cve.org/CVERecord?id=CVE-2019-20636 Référence CVE CVE-2019-9501 https://www.cve.org/CVERecord?id=CVE-2019-9501 Référence CVE CVE-2019-9502 https://www.cve.org/CVERecord?id=CVE-2019-9502 Référence CVE CVE-2020-0107 https://www.cve.org/CVERecord?id=CVE-2020-0107 Référence CVE CVE-2020-0122 https://www.cve.org/CVERecord?id=CVE-2020-0122 Référence CVE CVE-2020-0224 https://www.cve.org/CVERecord?id=CVE-2020-0224 Référence CVE CVE-2020-0225 https://www.cve.org/CVERecord?id=CVE-2020-0225 Référence CVE CVE-2020-0226 https://www.cve.org/CVERecord?id=CVE-2020-0226 Référence CVE CVE-2020-0227 https://www.cve.org/CVERecord?id=CVE-2020-0227 R

Official advisory
CERT-FR · French · CERTFR-2020-AVI-368Multiples vulnérabilités dans le noyau Linux de Debian

rd?id=CVE-2015-8839 Référence CVE CVE-2018-14610 https://www.cve.org/CVERecord?id=CVE-2018-14610 Référence CVE CVE-2018-14611 https://www.cve.org/CVERecord?id=CVE-2018-14611 Référence CVE CVE-2018-14612 https://www.cve.org/CVERecord?id=CVE-2018-14612 Référence CVE CVE-2018-14613 https://www.cve.org/CVERecord?id=CVE-2018-14613 Référence CVE CVE-2019-19319 https://www.cve.org/CVERecord?id=CVE-2019-19319 Référence CVE CVE-2019-19447 https://www.cve.org/CVERecord?id=CVE-2019-19447 Référence CVE CVE-2019-19462 https://www.cve.org/CVERecord?id=CVE-2019-19462 Référence CVE CVE-2019-19768 https://www.cve.org/CVERecord?id=CVE-2019-19768 Référence CVE CVE-2019-20636 https://www.cve.org/CVERecord?id=CVE-2019-20636 Référence CVE CVE-2019-20806 https://www.cve.org/CVERecord?id=CVE-2019-20806 Référence CVE CVE-2019-20811 https://www.cve.org/CVERecord?id=CVE-2019-20811 Référence CVE CVE-2019-2182 https://www.cve.org/CVERecord?id=CVE-2019-2182 Référence CVE CVE-2019-3016 https://www.cve.org/CVERecord?id=CVE-2019-3016 Référence CVE CVE-2019-5108 https://www.cve.org/CVERecord?id=CVE-2019-5108 Référence CVE CVE-2020-0009 https://www.cve.org/CVERecord?id=CVE-2020-0009 Référence CVE CVE-2020-0543 https://www.cve.org/CVERecord?id=CVE-2020-0543 Référence CVE CVE-2020-10690 https://www.cve.org/CVERecord?id=CVE-2020-1

Official advisory
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
n/a
Fixed
An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 8 Apr 2020 · Last source change 5 Aug 2024, 02:46 UTC · CWE-787 · Out-of-bounds Write

CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2019-11175
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceNIST NVD
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2019-20636 · cve.blacktree.nl