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Full vulnerability report · 2023
CVE-2023-0122High confidence

n/a Kernel — NULL Pointer Dereference

n/a · Kernel

7.5HighCVSS 3.1
Recommended action
Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
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-2023-12212

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 actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

A NULL pointer dereference vulnerability in the Linux kernel NVMe functionality, in nvmet_setup_auth(), allows an attacker to perform a Pre-Auth Denial of Service (DoS) attack on a remote machine. Affected versions v6.0-rc1 to v6.0-rc3, fixed in v6.0-rc4.

What

A NULL pointer dereference vulnerability in the Linux kernel NVMe functionality, in nvmet_setup_auth(), allows an attacker to perform a Pre-Auth Denial of Service (DoS) attack on a remote machine. Affected versions v6.0-rc1 to v6.0-rc3, fixed in v6.0-rc4.

Why

The product dereferences a pointer that it expects to be valid but is NULL.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.

What

A NULL pointer dereference vulnerability in the Linux kernel NVMe functionality, in nvmet_setup_auth(), allows an attacker to perform a Pre-Auth Denial of Service (DoS) attack on a remote machine. Affected versions v6.0-rc1 to v6.0-rc3, fixed in v6.0-rc4.

Why

The product dereferences a pointer that it expects to be valid but is NULL.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. 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
a network path → NULL Pointer Dereference → disrupt the affected service
Attack surface
Network
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-476 ↗

CWE-476: NULL Pointer Dereference. The product dereferences a pointer that it expects to be valid but is NULL.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/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.

AVNetworkAttack vector: The vulnerable component can be reached over a network.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.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
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedDenial of serviceCWE-476
A

Official authority intelligence

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

BSI · German · WID-SEC-W-2023-0015Linux Kernel: Schwachstelle ermöglicht Denial of Service

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

Official advisory
CERT-FR · French · CERTFR-2023-AVI-0578Multiples vulnérabilités dans le noyau Linux de SUSE

ERecord?id=CVE-2022-38096 Référence CVE CVE-2022-4269 https://www.cve.org/CVERecord?id=CVE-2022-4269 Référence CVE CVE-2022-45884 https://www.cve.org/CVERecord?id=CVE-2022-45884 Référence CVE CVE-2022-45885 https://www.cve.org/CVERecord?id=CVE-2022-45885 Référence CVE CVE-2022-45886 https://www.cve.org/CVERecord?id=CVE-2022-45886 Référence CVE CVE-2022-45887 https://www.cve.org/CVERecord?id=CVE-2022-45887 Référence CVE CVE-2022-45919 https://www.cve.org/CVERecord?id=CVE-2022-45919 Référence CVE CVE-2022-4744 https://www.cve.org/CVERecord?id=CVE-2022-4744 Référence CVE CVE-2023-0045 https://www.cve.org/CVERecord?id=CVE-2023-0045 Référence CVE CVE-2023-0122 https://www.cve.org/CVERecord?id=CVE-2023-0122 Référence CVE CVE-2023-0179 https://www.cve.org/CVERecord?id=CVE-2023-0179 Référence CVE CVE-2023-0394 https://www.cve.org/CVERecord?id=CVE-2023-0394 Référence CVE CVE-2023-0461 https://www.cve.org/CVERecord?id=CVE-2023-0461 Référence CVE CVE-2023-0469 https://www.cve.org/CVERecord?id=CVE-2023-0469 Référence CVE CVE-2023-0590 https://www.cve.org/CVERecord?id=CVE-2023-0590 Référence CVE CVE-2023-0597 https://www.cve.org/CVERecord?id=CVE-2023-0597 Référence CVE CVE-2023-1075 https://www.cve.org/CVERecord?id=CVE-2023-1075 Référence CVE CVE-2023-1076 https://www.cve.org/CVERecord?id=CVE-2023-1076 Ré

Official advisory
CERT-FR · French · CERTFR-2023-AVI-0544Multiples vulnérabilités dans le noyau Linux de SUSE

ERecord?id=CVE-2022-38096 Référence CVE CVE-2022-4269 https://www.cve.org/CVERecord?id=CVE-2022-4269 Référence CVE CVE-2022-45884 https://www.cve.org/CVERecord?id=CVE-2022-45884 Référence CVE CVE-2022-45885 https://www.cve.org/CVERecord?id=CVE-2022-45885 Référence CVE CVE-2022-45886 https://www.cve.org/CVERecord?id=CVE-2022-45886 Référence CVE CVE-2022-45887 https://www.cve.org/CVERecord?id=CVE-2022-45887 Référence CVE CVE-2022-45919 https://www.cve.org/CVERecord?id=CVE-2022-45919 Référence CVE CVE-2022-4744 https://www.cve.org/CVERecord?id=CVE-2022-4744 Référence CVE CVE-2023-0045 https://www.cve.org/CVERecord?id=CVE-2023-0045 Référence CVE CVE-2023-0122 https://www.cve.org/CVERecord?id=CVE-2023-0122 Référence CVE CVE-2023-0179 https://www.cve.org/CVERecord?id=CVE-2023-0179 Référence CVE CVE-2023-0386 https://www.cve.org/CVERecord?id=CVE-2023-0386 Référence CVE CVE-2023-0394 https://www.cve.org/CVERecord?id=CVE-2023-0394 Référence CVE CVE-2023-0461 https://www.cve.org/CVERecord?id=CVE-2023-0461 Référence CVE CVE-2023-0469 https://www.cve.org/CVERecord?id=CVE-2023-0469 Référence CVE CVE-2023-0590 https://www.cve.org/CVERecord?id=CVE-2023-0590 Référence CVE CVE-2023-0597 https://www.cve.org/CVERecord?id=CVE-2023-0597 Référence CVE CVE-2023-1075 https://www.cve.org/CVERecord?id=CVE-2023-1075 Ré

Official advisory
CERT-FR · French · CERTFR-2023-AVI-0277Multiples vulnérabilités dans le noyau Linux de SUSE

se.com/support/update/announcement/2023/suse-su-20231651-1/ Bulletin de sécurité SUSE SUSE-SU-2023:1653-1 du 28 mars 2023 https://www.suse.com/support/update/announcement/2023/suse-su-20231653-1/ Bulletin de sécurité SUSE SUSE-SU-2023:1654-1 du 28 mars 2023 https://www.suse.com/support/update/announcement/2023/suse-su-20231654-1/ Référence CVE CVE-2022-3523 https://www.cve.org/CVERecord?id=CVE-2022-3523 Référence CVE CVE-2022-36280 https://www.cve.org/CVERecord?id=CVE-2022-36280 Référence CVE CVE-2022-38096 https://www.cve.org/CVERecord?id=CVE-2022-38096 Référence CVE CVE-2023-0045 https://www.cve.org/CVERecord?id=CVE-2023-0045 Référence CVE CVE-2023-0122 https://www.cve.org/CVERecord?id=CVE-2023-0122 Référence CVE CVE-2023-0266 https://www.cve.org/CVERecord?id=CVE-2023-0266 Référence CVE CVE-2023-0461 https://www.cve.org/CVERecord?id=CVE-2023-0461 Référence CVE CVE-2023-0590 https://www.cve.org/CVERecord?id=CVE-2023-0590 Référence CVE CVE-2023-0597 https://www.cve.org/CVERecord?id=CVE-2023-0597 Référence CVE CVE-2023-1075 https://www.cve.org/CVERecord?id=CVE-2023-1075 Référence CVE CVE-2023-1076 https://www.cve.org/CVERecord?id=CVE-2023-1076 Référence CVE CVE-2023-1078 https://www.cve.org/CVERecord?id=CVE-2023-1078 Référence CVE CVE-2023-1095 https://www.cve.org/CVERecord?id=CVE-2023-1095 Ré

Official advisory
CERT-FR · French · CERTFR-2023-AVI-0166Multiples vulnérabilités dans le noyau Linux de SUSE

De multiples vulnérabilités ont été corrigées 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 à distance et une atteinte à l'intégrité des données.

Official advisory
CERT-FR · French · CERTFR-2023-AVI-0148Multiples vulnérabilités dans le noyau Linux de SUSE

ecord?id=CVE-2022-42896 Référence CVE CVE-2022-43750 https://www.cve.org/CVERecord?id=CVE-2022-43750 Référence CVE CVE-2022-4382 https://www.cve.org/CVERecord?id=CVE-2022-4382 Référence CVE CVE-2022-44032 https://www.cve.org/CVERecord?id=CVE-2022-44032 Référence CVE CVE-2022-44033 https://www.cve.org/CVERecord?id=CVE-2022-44033 Référence CVE CVE-2022-45934 https://www.cve.org/CVERecord?id=CVE-2022-45934 Référence CVE CVE-2022-4662 https://www.cve.org/CVERecord?id=CVE-2022-4662 Référence CVE CVE-2022-47520 https://www.cve.org/CVERecord?id=CVE-2022-47520 Référence CVE CVE-2022-47929 https://www.cve.org/CVERecord?id=CVE-2022-47929 Référence CVE CVE-2023-0122 https://www.cve.org/CVERecord?id=CVE-2023-0122 Référence CVE CVE-2023-0179 https://www.cve.org/CVERecord?id=CVE-2023-0179 Référence CVE CVE-2023-0266 https://www.cve.org/CVERecord?id=CVE-2023-0266 Référence CVE CVE-2023-0590 https://www.cve.org/CVERecord?id=CVE-2023-0590 Référence CVE CVE-2023-23454 https://www.cve.org/CVERecord?id=CVE-2023-23454 Référence CVE CVE-2023-23455 https://www.cve.org/CVERecord?id=CVE-2023-23455 Gestion détaillée du document le 17 février 2023 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 fr

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
Linux kernel 6.0-rc4
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. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 17 Jan 2023 · Last source change 4 Apr 2025, 18:50 UTC · CWE-476 · NULL Pointer Dereference

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-2023-12212
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCNA
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
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2023-12212↗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-2023-0122 · cve.blacktree.nl