CVE-2023-52984

System crash via unchecked PHY private data

Published Mar 27, 2025 · Updated May 11, 2026

NULL pointer dereference in the Linux kernel allows local users to crash systems using DP83825 or DP83826 PHY devices. The shared interrupt configuration path dereferences driver-private data that probe() initializes only for DP83822, leaving it NULL on the smaller PHY models. Reachability requires local low-privileged access, an affected physical PHY device, and interrupt configuration; the published consequence is a system crash only.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the Linux kernel allows local users to crash systems using DP83825 or DP83826 PHY devices. The shared interrupt configuration path dereferences driver-private data that probe() initializes only for DP83822, leaving it NULL on the smaller PHY models. Reachability requires local low-privileged access, an affected physical PHY device, and interrupt configuration; the published consequence is a system crash only.

The record

CVE
CVE-2023-52984
Published
Mar 27, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 27, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.10
  2. Affected versionversion=5dc39fd5ef35bc6919759fa99246581b1adc6b82 <2cd1e9c013ec56421c58921b1ddf1d2d53bd47fa
  3. Affected versionversion=5dc39fd5ef35bc6919759fa99246581b1adc6b82 <362a2f5531dc0e5b0b5b3e3a541000dbffa75461
  4. Affected versionversion=5dc39fd5ef35bc6919759fa99246581b1adc6b82 <422ae7d9c7221e8d4c8526d0f54106307d69d2dc
  5. Affected versionversion=5dc39fd5ef35bc6919759fa99246581b1adc6b82 <78901b10522cdf6badf24acf65a892637596bccc

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.10; version=5dc39fd5ef35bc6919759fa99246581b1adc6b82 <2cd1e9c013ec56421c58921b1ddf1d2d53bd47fa; version=5dc39fd5ef35bc6919759fa99246581b1adc6b82 <362a2f5531dc0e5b0b5b3e3a541000dbffa75461; version=5dc39fd5ef35bc6919759fa99246581b1adc6b82 <422ae7d9c7221e8d4c8526d0f54106307d69d2dc; version=5dc39fd5ef35bc6919759fa99246581b1adc6b82 <78901b10522cdf6badf24acf65a892637596bccc

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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