BlackTreeCVE Intelligence
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Full vulnerability report · 2020
CVE-2020-12114High confidence

n/a — Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Unknown · Unknown

4.7MediumCVSS 3.1
Recommended action
Patch only the product branches with a verified fix

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 1 structured product or package state remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityMediumOperational priority:Low, lowered one band.downgradedsince 4 Aug 2024

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • Exploitation requires an existing local or physical foothold with privileges.
  • EPSS is 0.44% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict local access and enforce least privilege on affected hosts.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Unknown Unknown and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: No default targetRemediation target: Normal maintenance

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 1 structured product or package state remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Distribution package intelligence

Release-specific package status

Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

5 package states
Package result overrides the generic status

BlackTree has verified remediation for at least one product or source, but the relevant distribution still reports no fixed package for 1 affected package state shown here. Treat those rows as affected with no fix until that distribution publishes a fixed version.

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.

Distribution releaseSource packageVendor stateFixed versionEvidence
Debian trixietrixie · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.5.3.7-1Debian Security Tracker ↗Source updated 6 Oct 2026
Debian bookwormbookworm · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.5.3.7-1Debian Security Tracker ↗Source updated 6 Oct 2026
Debian forkyforky · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.5.3.7-1Debian Security Tracker ↗Source updated 6 Oct 2026
Debian sidsid · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.5.3.7-1Debian Security Tracker ↗Source updated 6 Oct 2026
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 Ubuntu Security ↗Source updated 5 Oct 2026
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
CVE-2020-12114 · CSAF 2.0 · revision 17 · interimSUSE Product Security TeamCVE-2020-12114
97 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • kernel-default as component of HPE Helion OpenStack 8
  • kernel-default-base as component of HPE Helion OpenStack 8
  • kernel-default-devel as component of HPE Helion OpenStack 8
  • kernel-default-kgraft as component of HPE Helion OpenStack 8
  • kernel-devel as component of HPE Helion OpenStack 8
  • kernel-macros as component of HPE Helion OpenStack 8
  • kernel-source as component of HPE Helion OpenStack 8
  • kernel-source-azure as component of HPE Helion OpenStack 8
  • kernel-default as component of SUSE CaaS Platform 4.0
  • kernel-default-base as component of SUSE CaaS Platform 4.0
  • kernel-default-devel as component of SUSE CaaS Platform 4.0
  • kernel-devel as component of SUSE CaaS Platform 4.0
Summary
A pivot_root race condition in fs/namespace.c in the Linux kernel 4.4.x before 4.4.221, 4.9.x before 4.9.221, 4.14.x before 4.14.178, 4.19.x before 4.19.119, and 5.x before 5.3 allows local users to cause a denial of service (panic) by corrupting a mountpoint reference counter.
Remediation
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Optional official sources

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

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

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-2020-4430

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 actionPatch only the product branches with a verified fix

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 1 structured product or package state remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
01

What, why and how

A pivot_root race condition in fs/namespace.c in the Linux kernel 4.4.x before 4.4.221, 4.9.x before 4.9.221, 4.14.x before 4.14.178, 4.19.x before 4.19.119, and 5.x before 5.3 allows local users to cause a denial of service (panic) by corrupting a mountpoint reference counter.

What

A pivot_root race condition in fs/namespace.c in the Linux kernel 4.4.x before 4.4.221, 4.9.x before 4.9.221, 4.14.x before 4.14.178, 4.19.x before 4.19.119, and 5.x before 5.3 allows local users to cause a denial of service (panic) by corrupting a mountpoint reference counter.

Why

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may disrupt the affected service.

What

A pivot_root race condition in fs/namespace.c in the Linux kernel 4.4.x before 4.4.221, 4.9.x before 4.9.221, 4.14.x before 4.14.178, 4.19.x before 4.19.119, and 5.x before 5.3 allows local users to cause a denial of service (panic) by corrupting a mountpoint reference counter.

Why

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may disrupt the affected service.

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 → Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') → disrupt the affected service
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
High: exploitation depends on specific conditions
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-362 ↗

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'). The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

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:H/PR:L/UI:N/S:U/C:N/I:N/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.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.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.
Denial of serviceCWE-362
A

Official authority intelligence

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

BSI · German · WID-SEC-2025-2773Linux Kernel: Schwachstelle ermöglicht Denial of Service

Ein entfernter, authentisierter Angreifer kann eine Schwachstelle im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20200506Security Bulletin 06 May 2020

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 06 May 2020, published on 6 May 2020. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2021-AVI-424Multiples 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-554Multiples vulnérabilités dans Google Android

VERecord?id=CVE-2020-0432 Référence CVE CVE-2020-0433 https://www.cve.org/CVERecord?id=CVE-2020-0433 Référence CVE CVE-2020-0434 https://www.cve.org/CVERecord?id=CVE-2020-0434 Référence CVE CVE-2020-0435 https://www.cve.org/CVERecord?id=CVE-2020-0435 Référence CVE CVE-2020-11124 https://www.cve.org/CVERecord?id=CVE-2020-11124 Référence CVE CVE-2020-11129 https://www.cve.org/CVERecord?id=CVE-2020-11129 Référence CVE CVE-2020-11133 https://www.cve.org/CVERecord?id=CVE-2020-11133 Référence CVE CVE-2020-11135 https://www.cve.org/CVERecord?id=CVE-2020-11135 Référence CVE CVE-2020-11609 https://www.cve.org/CVERecord?id=CVE-2020-11609 Référence CVE CVE-2020-12114 https://www.cve.org/CVERecord?id=CVE-2020-12114 Référence CVE CVE-2020-12826 https://www.cve.org/CVERecord?id=CVE-2020-12826 Référence CVE CVE-2020-3613 https://www.cve.org/CVERecord?id=CVE-2020-3613 Référence CVE CVE-2020-3617 https://www.cve.org/CVERecord?id=CVE-2020-3617 Référence CVE CVE-2020-3620 https://www.cve.org/CVERecord?id=CVE-2020-3620 Référence CVE CVE-2020-3621 https://www.cve.org/CVERecord?id=CVE-2020-3621 Référence CVE CVE-2020-3622 https://www.cve.org/CVERecord?id=CVE-2020-3622 Référence CVE CVE-2020-3629 https://www.cve.org/CVERecord?id=CVE-2020-3629 Référence CVE CVE-2020-3634 https://www.cve.org/CVERecord?id=CVE-2020-3634

Official advisory ↗
CERT-FR · French · CERTFR-2020-AVI-547Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2020-10751 Référence CVE CVE-2020-10757 https://www.cve.org/CVERecord?id=CVE-2020-10757 Référence CVE CVE-2020-10766 https://www.cve.org/CVERecord?id=CVE-2020-10766 Référence CVE CVE-2020-10767 https://www.cve.org/CVERecord?id=CVE-2020-10767 Référence CVE CVE-2020-10768 https://www.cve.org/CVERecord?id=CVE-2020-10768 Référence CVE CVE-2020-10769 https://www.cve.org/CVERecord?id=CVE-2020-10769 Référence CVE CVE-2020-10773 https://www.cve.org/CVERecord?id=CVE-2020-10773 Référence CVE CVE-2020-10781 https://www.cve.org/CVERecord?id=CVE-2020-10781 Référence CVE CVE-2020-11669 https://www.cve.org/CVERecord?id=CVE-2020-11669 Référence CVE CVE-2020-12114 https://www.cve.org/CVERecord?id=CVE-2020-12114 Référence CVE CVE-2020-12464 https://www.cve.org/CVERecord?id=CVE-2020-12464 Référence CVE CVE-2020-12652 https://www.cve.org/CVERecord?id=CVE-2020-12652 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-2020-12655 https://www.cve.org/CVERecord?id=CVE-2020-12655 Référence CVE CVE-2020-12656 https://www.cve.org/CVERecord?id=CVE-2020-12656 Référence CVE CVE-2020-12657 https://www.cve.org/CVERecord?id=CVE-2020-12657 Référence CVE CVE-2020-12659 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2020-AVI-489Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2020-10732 Référence CVE CVE-2020-10751 https://www.cve.org/CVERecord?id=CVE-2020-10751 Référence CVE CVE-2020-10757 https://www.cve.org/CVERecord?id=CVE-2020-10757 Référence CVE CVE-2020-10766 https://www.cve.org/CVERecord?id=CVE-2020-10766 Référence CVE CVE-2020-10767 https://www.cve.org/CVERecord?id=CVE-2020-10767 Référence CVE CVE-2020-10768 https://www.cve.org/CVERecord?id=CVE-2020-10768 Référence CVE CVE-2020-10769 https://www.cve.org/CVERecord?id=CVE-2020-10769 Référence CVE CVE-2020-10773 https://www.cve.org/CVERecord?id=CVE-2020-10773 Référence CVE CVE-2020-10781 https://www.cve.org/CVERecord?id=CVE-2020-10781 Référence CVE CVE-2020-12114 https://www.cve.org/CVERecord?id=CVE-2020-12114 Référence CVE CVE-2020-12464 https://www.cve.org/CVERecord?id=CVE-2020-12464 Référence CVE CVE-2020-12652 https://www.cve.org/CVERecord?id=CVE-2020-12652 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-2020-12655 https://www.cve.org/CVERecord?id=CVE-2020-12655 Référence CVE CVE-2020-12656 https://www.cve.org/CVERecord?id=CVE-2020-12656 Référence CVE CVE-2020-12657 https://www.cve.org/CVERecord?id=CVE-2020-12657 Référence CVE CVE-2020-12769 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2020-AVI-376Multiples vulnérabilités dans le noyau Linux de SUSE

ecord?id=CVE-2019-20812 Référence CVE CVE-2019-9455 https://www.cve.org/CVERecord?id=CVE-2019-9455 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-2020-10690 Référence CVE CVE-2020-10711 https://www.cve.org/CVERecord?id=CVE-2020-10711 Référence CVE CVE-2020-10720 https://www.cve.org/CVERecord?id=CVE-2020-10720 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-2020-10757 https://www.cve.org/CVERecord?id=CVE-2020-10757 Référence CVE CVE-2020-12114 https://www.cve.org/CVERecord?id=CVE-2020-12114 Référence CVE CVE-2020-12464 https://www.cve.org/CVERecord?id=CVE-2020-12464 Référence CVE CVE-2020-12652 https://www.cve.org/CVERecord?id=CVE-2020-12652 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-2020-12655 https://www.cve.org/CVERecord?id=CVE-2020-12655 Référence CVE CVE-2020-12656 https://www.cve.org/CVERecord?id=CVE-2020-12656 Référence CVE CVE-2020-12657 https://www.cve.org/CVERecord?id=CVE-2020-12657 Référence CVE CVE-2020-12659 https://www.cve.org/CVERecord?id=

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

d?id=CVE-2020-10732 Référence CVE CVE-2020-10751 https://www.cve.org/CVERecord?id=CVE-2020-10751 Référence CVE CVE-2020-10757 https://www.cve.org/CVERecord?id=CVE-2020-10757 Référence CVE CVE-2020-10942 https://www.cve.org/CVERecord?id=CVE-2020-10942 Référence CVE CVE-2020-11494 https://www.cve.org/CVERecord?id=CVE-2020-11494 Référence CVE CVE-2020-11565 https://www.cve.org/CVERecord?id=CVE-2020-11565 Référence CVE CVE-2020-11608 https://www.cve.org/CVERecord?id=CVE-2020-11608 Référence CVE CVE-2020-11609 https://www.cve.org/CVERecord?id=CVE-2020-11609 Référence CVE CVE-2020-11668 https://www.cve.org/CVERecord?id=CVE-2020-11668 Référence CVE CVE-2020-12114 https://www.cve.org/CVERecord?id=CVE-2020-12114 Référence CVE CVE-2020-12464 https://www.cve.org/CVERecord?id=CVE-2020-12464 Référence CVE CVE-2020-12652 https://www.cve.org/CVERecord?id=CVE-2020-12652 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-2020-12768 https://www.cve.org/CVERecord?id=CVE-2020-12768 Référence CVE CVE-2020-12769 https://www.cve.org/CVERecord?id=CVE-2020-12769 Référence CVE CVE-2020-12770 https://www.cve.org/CVERecord?id=CVE-2020-12770 Référence CVE CVE-2020-12826 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2020-AVI-356Multiples vulnérabilités dans le noyau Linux d'Ubuntu

De multiples vulnérabilités ont été découvertes dans le noyau Linux d'Ubuntu. Elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un contournement de la politique de sécurité et une atteinte à la confidentialité des données.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2020-005003Linux Kernel における競合状態に関する脆弱性

Linux Kernel には、競合状態に関する脆弱性が存在します。

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.
Fix availability varies by product
Affected
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
Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 4 May 2020 · Last source change 4 Aug 2024, 11:48 UTC · CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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-2020-4430
Product sourceVendor CSAF · SUSE Product Security Team
Remediation sourceVendor CSAF · SUSE Product Security Team
CWE sourceNIST NVD
NVD statusNVD modified after enrichment

Missing structured fields: affected product. Missing data is not evidence of low risk; review the primary advisory.

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
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2020-4430↗Vendor CSAF · SUSE Product Security Team↗Patch or update reference↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
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-2020-12114 · cve.blacktree.nl