CVE-2025-68213

Kernel crash via unchecked vport configuration

Published Dec 16, 2025 · Updated Dec 16, 2025

NULL pointer dereference in the Linux idpf driver allows attackers to crash the kernel while removing a failed virtual function. The idpf_remove function dereferences adapter->vport_config[i] to free q_coalesce without checking whether failed VF initialization left the entry NULL. Triggering the fault requires an IDPF-backed SR-IOV configuration, a failed VF creation, and administrative control that removes the driver or disables the VF.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
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 idpf driver allows attackers to crash the kernel while removing a failed virtual function. The idpf_remove function dereferences adapter->vport_config[i] to free q_coalesce without checking whether failed VF initialization left the entry NULL. Triggering the fault requires an IDPF-backed SR-IOV configuration, a failed VF creation, and administrative control that removes the driver or disables the VF.

The record

CVE
CVE-2025-68213
Published
Dec 16, 2025
Updated
Dec 16, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Dec 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 16, 2025Record 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=5e87b3145578a169839e456fa0aba86e123d2d8e
  2. Affected versionversion=6.17
  3. Affected versionversion=ba11b0f3e9a97661f6caeee3dfc633af8ecee5a5
  4. Affected versionversion=bd80fbf3ed250ca98923780dab5e634db5d2f828 <a0e1c9bc1c9fe735978150ad075616a728073bc7
  5. Affected versionversion=e1e3fec3e34b4934a9d2c98e4ee00a4d87b19179 <118082368c2b6ddefe6cb607efc312285148f044
  6. Affected versionversion=e1e3fec3e34b4934a9d2c98e4ee00a4d87b19179 <d5be8663cff0ba7b94da34ebd499ce1123b4c334

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=5e87b3145578a169839e456fa0aba86e123d2d8e; version=6.17; version=ba11b0f3e9a97661f6caeee3dfc633af8ecee5a5; version=bd80fbf3ed250ca98923780dab5e634db5d2f828 <a0e1c9bc1c9fe735978150ad075616a728073bc7; version=e1e3fec3e34b4934a9d2c98e4ee00a4d87b19179 <118082368c2b6ddefe6cb607efc312285148f044; version=e1e3fec3e34b4934a9d2c98e4ee00a4d87b19179 <d5be8663cff0ba7b94da34ebd499ce1123b4c334

Published CVSS scores

No CVSS assessment is available in this record.

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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