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Full vulnerability report · 2025
CVE-2023-53019High confidence

net: mdio: validate parameter addr in mdiobus_get_phy()

Linux · Linux

7.8HighCVSS 3.1
Recommended action
Within 7 days

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

Patch available
Distribution package intelligence

Ubuntu vendor package status

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

2 package states
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
Ubuntu 24.04 LTSnoble · standard archivelinux-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-2023-59701

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

In the Linux kernel, the following vulnerability has been resolved: net: mdio: validate parameter addr in mdiobus_get_phy() The caller may pass any value as addr, what may result in an out-of-bounds access to array mdio_map. One existing case is stmmac_init_phy() that may pass -1 as addr. Therefore validate addr before using it.

What

In the Linux kernel, the following vulnerability has been resolved: net: mdio: validate parameter addr in mdiobus_get_phy() The caller may pass any value as addr, what may result in an out-of-bounds access to array mdio_map. One existing case is stmmac_init_phy() that may pass -1 as addr. Therefore validate addr before using it.

Why

The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array.

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: mdio: validate parameter addr in mdiobus_get_phy() The caller may pass any value as addr, what may result in an out-of-bounds access to array mdio_map. One existing case is stmmac_init_phy() that may pass -1 as addr. Therefore validate addr before using it.

Why

The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array.

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 → Improper Validation of Array Index → 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-129

CWE-129: Improper Validation of Array Index. The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array.

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: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.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.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-129
A

Official authority intelligence

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

BSI · German · WID-SEC-W-2025-0649Linux Kernel: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen oder nicht spezifizierte Effekte zu erzielen.

Official advisory
CERT-FR · French · CERTFR-2025-AVI-1057Multiples vulnérabilités dans les produits VMware

d?id=CVE-2023-52993 Référence CVE CVE-2023-52997 https://www.cve.org/CVERecord?id=CVE-2023-52997 Référence CVE CVE-2023-53004 https://www.cve.org/CVERecord?id=CVE-2023-53004 Référence CVE CVE-2023-53006 https://www.cve.org/CVERecord?id=CVE-2023-53006 Référence CVE CVE-2023-53007 https://www.cve.org/CVERecord?id=CVE-2023-53007 Référence CVE CVE-2023-53009 https://www.cve.org/CVERecord?id=CVE-2023-53009 Référence CVE CVE-2023-53015 https://www.cve.org/CVERecord?id=CVE-2023-53015 Référence CVE CVE-2023-53016 https://www.cve.org/CVERecord?id=CVE-2023-53016 Référence CVE CVE-2023-53017 https://www.cve.org/CVERecord?id=CVE-2023-53017 Référence CVE CVE-2023-53019 https://www.cve.org/CVERecord?id=CVE-2023-53019 Référence CVE CVE-2023-53026 https://www.cve.org/CVERecord?id=CVE-2023-53026 Référence CVE CVE-2023-53029 https://www.cve.org/CVERecord?id=CVE-2023-53029 Référence CVE CVE-2023-53030 https://www.cve.org/CVERecord?id=CVE-2023-53030 Référence CVE CVE-2023-53031 https://www.cve.org/CVERecord?id=CVE-2023-53031 Référence CVE CVE-2023-53032 https://www.cve.org/CVERecord?id=CVE-2023-53032 Référence CVE CVE-2023-53033 https://www.cve.org/CVERecord?id=CVE-2023-53033 Référence CVE CVE-2023-5363 https://www.cve.org/CVERecord?id=CVE-2023-5363 Référence CVE CVE-2023-5678 https://www.cve.org/CVERecord?id=CVE

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0336Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2023-52997 Référence CVE CVE-2023-53000 https://www.cve.org/CVERecord?id=CVE-2023-53000 Référence CVE CVE-2023-53005 https://www.cve.org/CVERecord?id=CVE-2023-53005 Référence CVE CVE-2023-53006 https://www.cve.org/CVERecord?id=CVE-2023-53006 Référence CVE CVE-2023-53007 https://www.cve.org/CVERecord?id=CVE-2023-53007 Référence CVE CVE-2023-53008 https://www.cve.org/CVERecord?id=CVE-2023-53008 Référence CVE CVE-2023-53010 https://www.cve.org/CVERecord?id=CVE-2023-53010 Référence CVE CVE-2023-53015 https://www.cve.org/CVERecord?id=CVE-2023-53015 Référence CVE CVE-2023-53016 https://www.cve.org/CVERecord?id=CVE-2023-53016 Référence CVE CVE-2023-53019 https://www.cve.org/CVERecord?id=CVE-2023-53019 Référence CVE CVE-2023-53023 https://www.cve.org/CVERecord?id=CVE-2023-53023 Référence CVE CVE-2023-53024 https://www.cve.org/CVERecord?id=CVE-2023-53024 Référence CVE CVE-2023-53025 https://www.cve.org/CVERecord?id=CVE-2023-53025 Référence CVE CVE-2023-53026 https://www.cve.org/CVERecord?id=CVE-2023-53026 Référence CVE CVE-2023-53028 https://www.cve.org/CVERecord?id=CVE-2023-53028 Référence CVE CVE-2023-53029 https://www.cve.org/CVERecord?id=CVE-2023-53029 Référence CVE CVE-2023-53030 https://www.cve.org/CVERecord?id=CVE-2023-53030 Référence CVE CVE-2023-53031 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0307Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2023-52993 Référence CVE CVE-2023-53000 https://www.cve.org/CVERecord?id=CVE-2023-53000 Référence CVE CVE-2023-53005 https://www.cve.org/CVERecord?id=CVE-2023-53005 Référence CVE CVE-2023-53006 https://www.cve.org/CVERecord?id=CVE-2023-53006 Référence CVE CVE-2023-53007 https://www.cve.org/CVERecord?id=CVE-2023-53007 Référence CVE CVE-2023-53008 https://www.cve.org/CVERecord?id=CVE-2023-53008 Référence CVE CVE-2023-53010 https://www.cve.org/CVERecord?id=CVE-2023-53010 Référence CVE CVE-2023-53015 https://www.cve.org/CVERecord?id=CVE-2023-53015 Référence CVE CVE-2023-53016 https://www.cve.org/CVERecord?id=CVE-2023-53016 Référence CVE CVE-2023-53019 https://www.cve.org/CVERecord?id=CVE-2023-53019 Référence CVE CVE-2023-53023 https://www.cve.org/CVERecord?id=CVE-2023-53023 Référence CVE CVE-2023-53024 https://www.cve.org/CVERecord?id=CVE-2023-53024 Référence CVE CVE-2023-53025 https://www.cve.org/CVERecord?id=CVE-2023-53025 Référence CVE CVE-2023-53026 https://www.cve.org/CVERecord?id=CVE-2023-53026 Référence CVE CVE-2023-53028 https://www.cve.org/CVERecord?id=CVE-2023-53028 Référence CVE CVE-2023-53029 https://www.cve.org/CVERecord?id=CVE-2023-53029 Référence CVE CVE-2023-53030 https://www.cve.org/CVERecord?id=CVE-2023-53030 Référence CVE CVE-2023-53033 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
7f854420fbfe9d49afe2ffb1df052cfe8e215541 < 1d80c259dfbadefa61b7ea334dfce5cb57f8c72f; 7f854420fbfe9d49afe2ffb1df052cfe8e215541 < c431a3d642593bbdb99e8a9e3eed608b730db6f8; 7f854420fbfe9d49afe2ffb1df052cfe8e215541 < 8a7b9560a3a8eb8724888c426e05926752f73aa0; 7f854420fbfe9d49afe2ffb1df052cfe8e215541 < 4bc5f1f6bc94e695dfd912122af96e7115a0ddb8; 7f854420fbfe9d49afe2ffb1df052cfe8e215541 < ad67de330d83e8078372b52af18ffe8d39e26c85; 7f854420fbfe9d49afe2ffb1df052cfe8e215541 < 7879626296e6ffd838ae0f2af1ab49ee46354973; 7f854420fbfe9d49afe2ffb1df052cfe8e215541 < 867dbe784c5010a466f00a7d1467c1c5ea569c75; 4.5
Fixed
< 4.5; 4.14.305 ≤ 4.14.*; 4.19.272 ≤ 4.19.*; 5.4.231 ≤ 5.4.*; 5.10.166 ≤ 5.10.*; 5.15.91 ≤ 5.15.*; 6.1.9 ≤ 6.1.*; 6.2 ≤ *
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 27 Mar 2025 · Last source change 11 May 2026, 19:37 UTC · CWE-129 · Improper Validation of Array Index

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-2023-59701
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-2023-53019 · cve.blacktree.nl