CVE-2024-46856

Kernel crash via uninitialized DP83825 private data

Published Sep 27, 2024 · Updated May 11, 2026

NULL pointer dereference in the Linux DP83822 PHY driver in Linux 6.10 allows local users to crash the kernel on DP83825 devices. The driver omits its probe callback for DP83825 models, leaving private data unset before dp8382x_config_init or dp83822_set_wol dereferences it. Exploitation requires local access and an affected DP83825 PHY; the resulting NULL dereference interrupts the system through a kernel crash.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the Linux DP83822 PHY driver in Linux 6.10 allows local users to crash the kernel on DP83825 devices. The driver omits its probe callback for DP83825 models, leaving private data unset before dp8382x_config_init or dp83822_set_wol dereferences it. Exploitation requires local access and an affected DP83825 PHY; the resulting NULL dereference interrupts the system through a kernel crash.

The record

CVE
CVE-2024-46856
Published
Sep 27, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 27, 2024CVE 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=6.10
  2. Affected versionversion=9ef9ecfa9e9f0472adf5b254bda1e0788bc8eaad <3f62ea572b3e8e3f10c39a9cb4f04ca9ae5f2952
  3. Affected versionversion=9ef9ecfa9e9f0472adf5b254bda1e0788bc8eaad <67b61e2f4c9c5df97a9a2ef7a1fe35eae00531f4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.10; version=9ef9ecfa9e9f0472adf5b254bda1e0788bc8eaad <3f62ea572b3e8e3f10c39a9cb4f04ca9ae5f2952; version=9ef9ecfa9e9f0472adf5b254bda1e0788bc8eaad <67b61e2f4c9c5df97a9a2ef7a1fe35eae00531f4

Published CVSS scores

5.5NIST NVDCVSS: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

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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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
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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