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Full vulnerability report · 2024
CVE-2022-49019High confidence

net: ethernet: nixge: fix NULL dereference

Linux · Linux

5.5MediumCVSS 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 8 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-2022-53903

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, the following vulnerability has been resolved: net: ethernet: nixge: fix NULL dereference In function nixge_hw_dma_bd_release() dereference of NULL pointer priv->rx_bd_v is possible for the case of its allocation failure in nixge_hw_dma_bd_init(). Move for() loop with priv->rx_bd_v dereference under the check for its validity. Found by Linux Verification Center (linuxtesting.org) with SVACE.

What

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: nixge: fix NULL dereference In function nixge_hw_dma_bd_release() dereference of NULL pointer priv->rx_bd_v is possible for the case of its allocation failure in nixge_hw_dma_bd_init(). Move for() loop with priv->rx_bd_v dereference under the check for its validity. Found by Linux Verification Center (linuxtesting.org) with SVACE.

Why

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

How

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

What

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: nixge: fix NULL dereference In function nixge_hw_dma_bd_release() dereference of NULL pointer priv->rx_bd_v is possible for the case of its allocation failure in nixge_hw_dma_bd_init(). Move for() loop with priv->rx_bd_v dereference under the check for its validity. Found by Linux Verification Center (linuxtesting.org) with SVACE.

Why

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

How

An attacker operating through local access may attempt exploitation with low 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 → NULL Pointer Dereference → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Local
Privileges required
Low: a basic authenticated account 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-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:L/AC:L/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.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.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.
CWE-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-2024-3251Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Ein Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen oder andere, nicht näher bekannte Auswirkungen zu erzielen..

Official advisory
CERT-FR · French · CERTFR-2024-AVI-1102Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2022-49006 Référence CVE CVE-2022-49007 https://www.cve.org/CVERecord?id=CVE-2022-49007 Référence CVE CVE-2022-49010 https://www.cve.org/CVERecord?id=CVE-2022-49010 Référence CVE CVE-2022-49011 https://www.cve.org/CVERecord?id=CVE-2022-49011 Référence CVE CVE-2022-49012 https://www.cve.org/CVERecord?id=CVE-2022-49012 Référence CVE CVE-2022-49014 https://www.cve.org/CVERecord?id=CVE-2022-49014 Référence CVE CVE-2022-49015 https://www.cve.org/CVERecord?id=CVE-2022-49015 Référence CVE CVE-2022-49016 https://www.cve.org/CVERecord?id=CVE-2022-49016 Référence CVE CVE-2022-49017 https://www.cve.org/CVERecord?id=CVE-2022-49017 Référence CVE CVE-2022-49019 https://www.cve.org/CVERecord?id=CVE-2022-49019 Référence CVE CVE-2022-49020 https://www.cve.org/CVERecord?id=CVE-2022-49020 Référence CVE CVE-2022-49021 https://www.cve.org/CVERecord?id=CVE-2022-49021 Référence CVE CVE-2022-49022 https://www.cve.org/CVERecord?id=CVE-2022-49022 Référence CVE CVE-2022-49023 https://www.cve.org/CVERecord?id=CVE-2022-49023 Référence CVE CVE-2022-49024 https://www.cve.org/CVERecord?id=CVE-2022-49024 Référence CVE CVE-2022-49025 https://www.cve.org/CVERecord?id=CVE-2022-49025 Référence CVE CVE-2022-49026 https://www.cve.org/CVERecord?id=CVE-2022-49026 Référence CVE CVE-2022-49027 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2024-AVI-1048Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2022-49005 Référence CVE CVE-2022-49006 https://www.cve.org/CVERecord?id=CVE-2022-49006 Référence CVE CVE-2022-49007 https://www.cve.org/CVERecord?id=CVE-2022-49007 Référence CVE CVE-2022-49010 https://www.cve.org/CVERecord?id=CVE-2022-49010 Référence CVE CVE-2022-49011 https://www.cve.org/CVERecord?id=CVE-2022-49011 Référence CVE CVE-2022-49012 https://www.cve.org/CVERecord?id=CVE-2022-49012 Référence CVE CVE-2022-49014 https://www.cve.org/CVERecord?id=CVE-2022-49014 Référence CVE CVE-2022-49015 https://www.cve.org/CVERecord?id=CVE-2022-49015 Référence CVE CVE-2022-49016 https://www.cve.org/CVERecord?id=CVE-2022-49016 Référence CVE CVE-2022-49019 https://www.cve.org/CVERecord?id=CVE-2022-49019 Référence CVE CVE-2022-49020 https://www.cve.org/CVERecord?id=CVE-2022-49020 Référence CVE CVE-2022-49021 https://www.cve.org/CVERecord?id=CVE-2022-49021 Référence CVE CVE-2022-49022 https://www.cve.org/CVERecord?id=CVE-2022-49022 Référence CVE CVE-2022-49023 https://www.cve.org/CVERecord?id=CVE-2022-49023 Référence CVE CVE-2022-49024 https://www.cve.org/CVERecord?id=CVE-2022-49024 Référence CVE CVE-2022-49025 https://www.cve.org/CVERecord?id=CVE-2022-49025 Référence CVE CVE-2022-49026 https://www.cve.org/CVERecord?id=CVE-2022-49026 Référence CVE CVE-2022-49027 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2024-AVI-1033Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2022-49005 Référence CVE CVE-2022-49006 https://www.cve.org/CVERecord?id=CVE-2022-49006 Référence CVE CVE-2022-49007 https://www.cve.org/CVERecord?id=CVE-2022-49007 Référence CVE CVE-2022-49010 https://www.cve.org/CVERecord?id=CVE-2022-49010 Référence CVE CVE-2022-49011 https://www.cve.org/CVERecord?id=CVE-2022-49011 Référence CVE CVE-2022-49012 https://www.cve.org/CVERecord?id=CVE-2022-49012 Référence CVE CVE-2022-49014 https://www.cve.org/CVERecord?id=CVE-2022-49014 Référence CVE CVE-2022-49015 https://www.cve.org/CVERecord?id=CVE-2022-49015 Référence CVE CVE-2022-49016 https://www.cve.org/CVERecord?id=CVE-2022-49016 Référence CVE CVE-2022-49019 https://www.cve.org/CVERecord?id=CVE-2022-49019 Référence CVE CVE-2022-49021 https://www.cve.org/CVERecord?id=CVE-2022-49021 Référence CVE CVE-2022-49022 https://www.cve.org/CVERecord?id=CVE-2022-49022 Référence CVE CVE-2022-49023 https://www.cve.org/CVERecord?id=CVE-2022-49023 Référence CVE CVE-2022-49024 https://www.cve.org/CVERecord?id=CVE-2022-49024 Référence CVE CVE-2022-49025 https://www.cve.org/CVERecord?id=CVE-2022-49025 Référence CVE CVE-2022-49026 https://www.cve.org/CVERecord?id=CVE-2022-49026 Référence CVE CVE-2022-49027 https://www.cve.org/CVERecord?id=CVE-2022-49027 Référence CVE CVE-2022-49028 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2024-AVI-0999Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2022-49006 Référence CVE CVE-2022-49007 https://www.cve.org/CVERecord?id=CVE-2022-49007 Référence CVE CVE-2022-49010 https://www.cve.org/CVERecord?id=CVE-2022-49010 Référence CVE CVE-2022-49011 https://www.cve.org/CVERecord?id=CVE-2022-49011 Référence CVE CVE-2022-49012 https://www.cve.org/CVERecord?id=CVE-2022-49012 Référence CVE CVE-2022-49014 https://www.cve.org/CVERecord?id=CVE-2022-49014 Référence CVE CVE-2022-49015 https://www.cve.org/CVERecord?id=CVE-2022-49015 Référence CVE CVE-2022-49016 https://www.cve.org/CVERecord?id=CVE-2022-49016 Référence CVE CVE-2022-49017 https://www.cve.org/CVERecord?id=CVE-2022-49017 Référence CVE CVE-2022-49019 https://www.cve.org/CVERecord?id=CVE-2022-49019 Référence CVE CVE-2022-49020 https://www.cve.org/CVERecord?id=CVE-2022-49020 Référence CVE CVE-2022-49021 https://www.cve.org/CVERecord?id=CVE-2022-49021 Référence CVE CVE-2022-49022 https://www.cve.org/CVERecord?id=CVE-2022-49022 Référence CVE CVE-2022-49023 https://www.cve.org/CVERecord?id=CVE-2022-49023 Référence CVE CVE-2022-49024 https://www.cve.org/CVERecord?id=CVE-2022-49024 Référence CVE CVE-2022-49025 https://www.cve.org/CVERecord?id=CVE-2022-49025 Référence CVE CVE-2022-49026 https://www.cve.org/CVERecord?id=CVE-2022-49026 Référence CVE CVE-2022-49027 https://www.cve.org/CVERecord?id=

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
492caffa8a1a405f661c111acabfe6b8b9645db8 < 910c0264b64ef2dad8887714a7c56c93e39a0ed3; 492caffa8a1a405f661c111acabfe6b8b9645db8 < 45752af0247589e6d3dede577415bfe117b4392c; 492caffa8a1a405f661c111acabfe6b8b9645db8 < 9c584d6d9cfb935dce8fc81a4c26debac0a3049b; 492caffa8a1a405f661c111acabfe6b8b9645db8 < 80e82f7b440b65cf131dce10f487dc73a7046e6b; 492caffa8a1a405f661c111acabfe6b8b9645db8 < 9256db4e45e8b497b0e993cc3ed4ad08eb2389b6; 4.17
Fixed
< 4.17; 5.4.226 ≤ 5.4.*; 5.10.158 ≤ 5.10.*; 5.15.82 ≤ 5.15.*; 6.0.12 ≤ 6.0.*; 6.1 ≤ *
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 21 Oct 2024 · Last source change 11 May 2026, 18:51 UTC · CWE-476 · NULL Pointer Dereference

CVE recordCVE.org · 5.2
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-2022-53903
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceNIST NVD
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.

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-2022-49019 · cve.blacktree.nl