BlackTreeIndependent security intelligence

Full vulnerability report · 2022

CVE-2022-0185High confidence

Linux Kernel Heap-Based Buffer Overflow Vulnerability

Linux · Kernel

8.4HighCVSS 3.1

Recommended action

Patch now

CISA confirms exploitation in the wild and lists 2024-09-11 as the remediation due date.

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 release	Source package	Vendor state	Fixed version	Evidence
Ubuntu 24.04 LTSnoble · standard archive	`linux-raspi-realtime`	Affected, 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 feed`	Canonical record ↗Source updated 4 Sept 2026

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-2022-15389

CISA KEV mirrored by ENISA

A heap-based buffer overflow flaw was found in the way the legacy_parse_param function in the Filesystem Context functionality of the Linux kernel verified the supplied parameters length. An unprivileged (in case of unprivileged user namespaces enabled, otherwise needs namespaced CAP_SYS_ADMIN privilege) local user able to open a filesystem that does not support the Filesystem Context API (and thus fallbacks to legacy handling) could use this flaw to escalate their privileges on the system.

EUVD state: Present in the current official mapping
Known exploitation: Recorded by ENISA since 21 Aug 2024. Evidence sources: cisa_kev.
ENISA score: 8.4 · CVSS 3.1
Advisory evidence: 29 linked advisory records

Explicit mitigation evidence

Only statements that explicitly mention a fix, patch, update, workaround or mitigation are shown here.

csaf_suse · SUSE-SU-2022:0295-1Security update for the Linux Kernel (Live Patch 3 for SLE 15 SP3)
csaf_suse · SUSE-SU-2022:0198-1Security update for the Linux Kernel
csaf_suse · SUSE-SU-2022:0197-1Security update for the Linux Kernel
csaf_suse · SUSE-SU-2022:0291-1Security update for the Linux Kernel (Live Patch 11 for SLE 15 SP2)
csaf_redhat · RHSA-2022:0187Red Hat Security Advisory: kernel-rt security and bug fix update
csaf_opensuse · openSUSE-SU-2022:0198-1Security update for the Linux Kernel
csaf_redhat · RHSA-2022:0231Red Hat Security Advisory: kpatch-patch security update
csaf_suse · SUSE-SU-2022:0288-1Security update for the Linux Kernel
csaf_suse · SUSE-SU-2022:0241-1Security update for the Linux Kernel (Live Patch 14 for SLE 15 SP2)
csaf_redhat · RHSA-2022:0540Red Hat Security Advisory: Red Hat Virtualization Host security update [ovirt-4.4.10-1]
csaf_suse · SUSE-SU-2022:0289-1Security update for the Linux Kernel
csaf_redhat · RHSA-2022:0186Red Hat Security Advisory: kernel security, bug fix, and enhancement update
csaf_redhat · RHSA-2022:0232Red Hat Security Advisory: kpatch-patch security update
csaf_suse · SUSE-SU-2022:0257-1Security update for the Linux Kernel (Live Patch 2 for SLE 15 SP3)
csaf_redhat · RHSA-2022:0176Red Hat Security Advisory: kernel-rt security and bug fix update
csaf_suse · SUSE-SU-2022:0254-1Security update for the Linux Kernel (Live Patch 12 for SLE 15 SP2)
csaf_suse · SUSE-SU-2022:0262-1Security update for the Linux Kernel (Live Patch 11 for SLE 15 SP3)
csaf_suse · SUSE-SU-2022:0238-1Security update for the Linux Kernel (Live Patch 19 for SLE 15 SP2)
csaf_suse · SUSE-SU-2022:0293-1Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP3)
csaf_suse · SUSE-SU-2022:0292-1Security update for the Linux Kernel (Live Patch 13 for SLE 15 SP2)
csaf_suse · SUSE-SU-2022:0169-1Security update for the Linux Kernel
csaf_opensuse · openSUSE-SU-2022:0169-1Security update for the Linux Kernel
csaf_suse · SUSE-SU-2022:0270-1Security update for the Linux Kernel (Live Patch 7 for SLE 15 SP3)
csaf_suse · SUSE-SU-2022:0239-1Security update for the Linux Kernel (Live Patch 22 for SLE 15 SP2)
csaf_redhat · RHSA-2022:0188Red Hat Security Advisory: kernel security and bug fix update

Recommended actionPatch now

CISA confirms exploitation in the wild and lists 2024-09-11 as the remediation due date.

Patch available

What, why and how

Linux kernel contains a heap-based buffer overflow vulnerability in the legacy_parse_param function in the Filesystem Context functionality. This allows an attacker to open a filesystem that does not support the Filesystem Context API and ultimately escalate privileges.

What

Why

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

How

An attacker operating through local access may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Why

How

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.

Confirmed in the wild

CISA added this CVE to its Known Exploited Vulnerabilities catalogue on 2024-08-21.

Public PoC / exploit material

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path: local access → Integer Overflow or Wraparound → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface: Local
Privileges required: None: unauthenticated exploitation is possible
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-190 ↗
CWE-190: Integer Overflow or Wraparound. The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
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:N/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.PRNonePrivileges required: The attacker does not need an account or existing 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.

UnauthenticatedCWE-190CISA KEVPublic exploit reference

Official authority intelligence

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

ENISA EUVD · EUVD-2022-15389Known-exploited evidence recorded

Official EUVD record

BSI · German · WID-SEC-W-2022-0515IBM Spectrum Protect: Mehrere Schwachstellen

Ein entfernter, anonymer, authentisierter oder lokaler Angreifer kann mehrere Schwachstellen in IBM Spectrum Protect ausnutzen, um einen Denial-of-Service-Zustand herbeizuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, beliebigen Code auszuführen, seine Rechte zu erweitern oder beliebigen Code mit Root-Rechten auszuführen.

Official advisory

CERT-FR · French · CERTFR-2023-AVI-0362Multiples vulnérabilités dans les produits IBM

/CVERecord?id=CVE-2015-5237 Référence CVE CVE-2020-7598 https://www.cve.org/CVERecord?id=CVE-2020-7598 Référence CVE CVE-2020-7789 https://www.cve.org/CVERecord?id=CVE-2020-7789 Référence CVE CVE-2021-22569 https://www.cve.org/CVERecord?id=CVE-2021-22569 Référence CVE CVE-2021-29469 https://www.cve.org/CVERecord?id=CVE-2021-29469 Référence CVE CVE-2021-3516 https://www.cve.org/CVERecord?id=CVE-2021-3516 Référence CVE CVE-2021-3518 https://www.cve.org/CVERecord?id=CVE-2021-3518 Référence CVE CVE-2021-39036 https://www.cve.org/CVERecord?id=CVE-2021-39036 Référence CVE CVE-2021-44906 https://www.cve.org/CVERecord?id=CVE-2021-44906 Référence CVE CVE-2022-0185 https://www.cve.org/CVERecord?id=CVE-2022-0185 Référence CVE CVE-2022-21680 https://www.cve.org/CVERecord?id=CVE-2022-21680 Référence CVE CVE-2022-21681 https://www.cve.org/CVERecord?id=CVE-2022-21681 Référence CVE CVE-2022-24434 https://www.cve.org/CVERecord?id=CVE-2022-24434 Référence CVE CVE-2022-24728 https://www.cve.org/CVERecord?id=CVE-2022-24728 Référence CVE CVE-2022-24729 https://www.cve.org/CVERecord?id=CVE-2022-24729 Référence CVE CVE-2022-25647 https://www.cve.org/CVERecord?id=CVE-2022-25647 Référence CVE CVE-2022-31129 https://www.cve.org/CVERecord?id=CVE-2022-31129 Référence CVE CVE-2022-3171 https://www.cve.org/CVERecord?id=CV

Official advisory

CERT-FR · French · CERTFR-2022-AVI-591Multiples vulnérabilités dans les produits IBM

d?id=CVE-2021-42248 Référence CVE CVE-2021-42836 https://www.cve.org/CVERecord?id=CVE-2021-42836 Référence CVE CVE-2021-43565 https://www.cve.org/CVERecord?id=CVE-2021-43565 Référence CVE CVE-2021-43784 https://www.cve.org/CVERecord?id=CVE-2021-43784 Référence CVE CVE-2021-44716 https://www.cve.org/CVERecord?id=CVE-2021-44716 Référence CVE CVE-2021-44733 https://www.cve.org/CVERecord?id=CVE-2021-44733 Référence CVE CVE-2021-44907 https://www.cve.org/CVERecord?id=CVE-2021-44907 Référence CVE CVE-2021-45485 https://www.cve.org/CVERecord?id=CVE-2021-45485 Référence CVE CVE-2021-45486 https://www.cve.org/CVERecord?id=CVE-2021-45486 Référence CVE CVE-2022-0185 https://www.cve.org/CVERecord?id=CVE-2022-0185 Référence CVE CVE-2022-0286 https://www.cve.org/CVERecord?id=CVE-2022-0286 Référence CVE CVE-2022-0492 https://www.cve.org/CVERecord?id=CVE-2022-0492 Référence CVE CVE-2022-0778 https://www.cve.org/CVERecord?id=CVE-2022-0778 Référence CVE CVE-2022-0847 https://www.cve.org/CVERecord?id=CVE-2022-0847 Référence CVE CVE-2022-0850 https://www.cve.org/CVERecord?id=CVE-2022-0850 Référence CVE CVE-2022-1011 https://www.cve.org/CVERecord?id=CVE-2022-1011 Référence CVE CVE-2022-22942 https://www.cve.org/CVERecord?id=CVE-2022-22942 Référence CVE CVE-2022-27191 https://www.cve.org/CVERecord?id=CVE-2022-2719

Official advisory

CERT-FR · French · CERTFR-2022-AVI-299Multiples vulnérabilités dans le noyau Linux d'Ubuntu

CVERecord?id=CVE-2021-39636 Référence CVE CVE-2021-4083 https://www.cve.org/CVERecord?id=CVE-2021-4083 Référence CVE CVE-2021-4090 https://www.cve.org/CVERecord?id=CVE-2021-4090 Référence CVE CVE-2021-4155 https://www.cve.org/CVERecord?id=CVE-2021-4155 Référence CVE CVE-2021-42327 https://www.cve.org/CVERecord?id=CVE-2021-42327 Référence CVE CVE-2021-42739 https://www.cve.org/CVERecord?id=CVE-2021-42739 Référence CVE CVE-2021-43976 https://www.cve.org/CVERecord?id=CVE-2021-43976 Référence CVE CVE-2021-45486 https://www.cve.org/CVERecord?id=CVE-2021-45486 Référence CVE CVE-2022-0001 https://www.cve.org/CVERecord?id=CVE-2022-0001 Référence CVE CVE-2022-0185 https://www.cve.org/CVERecord?id=CVE-2022-0185 Référence CVE CVE-2022-0330 https://www.cve.org/CVERecord?id=CVE-2022-0330 Référence CVE CVE-2022-0435 https://www.cve.org/CVERecord?id=CVE-2022-0435 Référence CVE CVE-2022-0492 https://www.cve.org/CVERecord?id=CVE-2022-0492 Référence CVE CVE-2022-0516 https://www.cve.org/CVERecord?id=CVE-2022-0516 Référence CVE CVE-2022-0742 https://www.cve.org/CVERecord?id=CVE-2022-0742 Référence CVE CVE-2022-0847 https://www.cve.org/CVERecord?id=CVE-2022-0847 Référence CVE CVE-2022-1055 https://www.cve.org/CVERecord?id=CVE-2022-1055 Référence CVE CVE-2022-22942 https://www.cve.org/CVERecord?id=CVE-2022-22942

Official advisory

CERT-FR · French · CERTFR-2022-AVI-108Multiples vulnérabilités dans le noyau Linux de SUSE

VERecord?id=CVE-2021-4149 Référence CVE CVE-2021-4154 https://www.cve.org/CVERecord?id=CVE-2021-4154 Référence CVE CVE-2021-4197 https://www.cve.org/CVERecord?id=CVE-2021-4197 Référence CVE CVE-2021-4202 https://www.cve.org/CVERecord?id=CVE-2021-4202 Référence CVE CVE-2021-42739 https://www.cve.org/CVERecord?id=CVE-2021-42739 Référence CVE CVE-2021-44733 https://www.cve.org/CVERecord?id=CVE-2021-44733 Référence CVE CVE-2021-45485 https://www.cve.org/CVERecord?id=CVE-2021-45485 Référence CVE CVE-2021-45486 https://www.cve.org/CVERecord?id=CVE-2021-45486 Référence CVE CVE-2021-46283 https://www.cve.org/CVERecord?id=CVE-2021-46283 Référence CVE CVE-2022-0185 https://www.cve.org/CVERecord?id=CVE-2022-0185 Référence CVE CVE-2022-0322 https://www.cve.org/CVERecord?id=CVE-2022-0322 Gestion détaillée du document le 04 février 2022 Version initiale Alertes Avis Bulletins d’actualités Mentions légales Conditions générales À propos Contact cyber.gouv.fr service-public.fr legifrance.gouv.fr info.gouv.fr france.fr info.gouv.fr/risques Premier Ministre / Secrétariat Général de la Défense et de la Sécurité Nationale / Agence nationale de la sécurité des systèmes d'information

Official advisory

CERT-FR · French · CERTFR-2022-AVI-100Multiples vulnérabilités dans le noyau Linux de SUSE

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

Official advisory

CERT-FR · French · CERTFR-2022-AVI-080Multiples vulnérabilités dans le noyau Linux de SUSE

Official advisory

CERT-FR · French · CERTFR-2022-AVI-066Multiples vulnérabilités dans le noyau Linux de Ubuntu

De multiples vulnérabilités ont été découvertes dans le noyau Linux de Ubuntu. Elles permettent à un attaquant de provoquer une exécution de code arbitraire et un déni de service.

Official advisory

CERT-FR · French · CERTFR-2022-AVI-071Multiples vulnérabilités dans le noyau Linux de Debian

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

Official advisory

CERT-FR · French · CERTFR-2022-AVI-064Multiples vulnérabilités dans le noyau Linux de Red Hat

De multiples vulnérabilités ont été découvertes dans le noyau Linux de Red Hat. Elles permettent à un attaquant de provoquer un déni de service, une atteinte à la confidentialité des données et une élévation de privilèges.

Official advisory

CERT-FR · French · CERTFR-2022-AVI-048Multiples 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, un contournement de la politique de sécurité et une atteinte à l'intégrité des données.

Official advisory

NBSZ-NKI · Hungarian · cve-2022-0185CVE-2022-0185

Magas

Official advisory

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: 8.4
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.

Evidence and provenance

Published 11 Feb 2022 · Last source change 21 Oct 2025, 23:15 UTC · CWE-190 · Integer Overflow or Wraparound

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-2022-15389

Product sourceCNA

Remediation sourceCVE/CNA references

CWE sourceCNA

NVD statusNVD enriched

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.

2022-02-11CVE published

2024-08-21Added to CISA KEV

2025-10-21Fixed release or patch reference recorded

ENISA EUVD · EUVD-2022-15389↗CISA KEV record↗CVE authority or vendor reference↗Patch or update reference↗Public exploit reference↗Public exploit 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.

Linux Kernel Heap-Based Buffer Overflow Vulnerability

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

EUVD-2022-15389

What, why and how

Exploit reality and attack path

Official authority intelligence

Patch and workaround

Evidence and provenance

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