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CVE-2023-53019· NVD / CVE Program· CNA Linux

net: mdio: validate parameter addr in mdiobus_get_phy()

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.20% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 1d80c259dfbadefa61b7ea334dfce5cb57f8c72f, 4bc5f1f6bc94e695dfd912122af96e7115a0ddb8, 7879626296e6ffd838ae0f2af1ab49ee46354973.

Low priority for now. Upgrade to Linux Linux 1d80c259dfbadefa61b7ea334dfce5cb57f8c72f, 4bc5f1f6bc94e695dfd912122af96e7115a0ddb8, 7879626296e6ffd838ae0f2af1ab49ee46354973 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Mar 27, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 9th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel4.5 and later · before 4.14.305
  • linux linux kernel4.15 and later · before 4.19.272
  • linux linux kernel4.20 and later · before 5.4.231
  • linux linux kernel5.5 and later · before 5.10.166
  • linux linux kernel5.11 and later · before 5.15.91
  • linux linux kernel5.16 and later · before 6.1.9
  • linux linux kernel6.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.5affected
    • 7f854420fbfe9d49afe2ffb1df052cfe8e215541 and later · before 1d80c259dfbadefa61b7ea334dfce5cb57f8c72faffected · git
    • 7f854420fbfe9d49afe2ffb1df052cfe8e215541 and later · before c431a3d642593bbdb99e8a9e3eed608b730db6f8affected · git
    • 7f854420fbfe9d49afe2ffb1df052cfe8e215541 and later · before 8a7b9560a3a8eb8724888c426e05926752f73aa0affected · git
    • 7f854420fbfe9d49afe2ffb1df052cfe8e215541 and later · before 4bc5f1f6bc94e695dfd912122af96e7115a0ddb8affected · git
    • 7f854420fbfe9d49afe2ffb1df052cfe8e215541 and later · before ad67de330d83e8078372b52af18ffe8d39e26c85affected · git
    • 7f854420fbfe9d49afe2ffb1df052cfe8e215541 and later · before 7879626296e6ffd838ae0f2af1ab49ee46354973affected · git
    • 7f854420fbfe9d49afe2ffb1df052cfe8e215541 and later · before 867dbe784c5010a466f00a7d1467c1c5ea569c75affected · git
    • before 4.5not affected · semver
    • 4.14.305 and later · up to and including 4.14.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.11-16.1.11-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now
  • CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
    83Now

Published before and after this one in the same product

  • ← EarlierCVE-2023-53017Mar 27, 2025 · Bluetooth: hci_sync: fix memory leak in hci_update_adv_data()
    22Monitor
  • ← EarlierCVE-2023-53018Mar 27, 2025 · Bluetooth: hci_conn: Fix memory leaks
    22Monitor
  • Later →CVE-2023-53020Mar 27, 2025 · l2tp: close all race conditions in l2tp_tunnel_register()
    18Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux1d80c259dfbadefa61b7ea334dfce5cb57f8c72fVendor (CNA)
Linux Linux4bc5f1f6bc94e695dfd912122af96e7115a0ddb8Vendor (CNA)
Linux Linux7879626296e6ffd838ae0f2af1ab49ee46354973Vendor (CNA)
Linux Linux867dbe784c5010a466f00a7d1467c1c5ea569c75Vendor (CNA)
Linux Linux8a7b9560a3a8eb8724888c426e05926752f73aa0Vendor (CNA)
Linux Linuxad67de330d83e8078372b52af18ffe8d39e26c85Vendor (CNA)
Linux Linuxc431a3d642593bbdb99e8a9e3eed608b730db6f8Vendor (CNA)
debian:linux6.1.11-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2021-47548307 days apartethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port()
    39Monitor
  • CVE-2026-64018479 days apartnet: mana: validate rx_req_idx to prevent out-of-bounds array access
    37Monitor
  • CVE-2026-23246356 days apartwifi: mac80211: bounds-check link_id in ieee80211_ml_reconfiguration
    35Monitor
  • CVE-2026-43110405 days apartwifi: brcmfmac: validate bsscfg indices in IF events
    35Monitor
  • CVE-2026-43172405 days apartwifi: iwlwifi: fix 22000 series SMEM parsing
    35Monitor
  • CVE-2023-529870 days apartASoC: SOF: ipc4-mtrace: prevent underflow in sof_ipc4_priority_mask_dfs_write()
    31Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-129 · Improper Validation of Array Index

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records