CVE-2025-68192Network attack vector

Kernel panic via uninitialized MAC header offset

Published Dec 16, 2025 · Updated Dec 16, 2025

Denial of service in the Linux qmi_wwan driver allows attackers to trigger a kernel panic through IPsec traffic on qmimux0. For raw IP packets, qmimux_rx_fixup leaves skb->mac_header uninitialized, so xfrm reads a misaligned offset on strict-alignment systems. The crash requires an ARM or ARM64 system using IPsec over a qmi_wwan qmimux0 interface, and the reported consequence is a kernel panic.

CVSS severity9.8
Critical
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux qmi_wwan driver allows attackers to trigger a kernel panic through IPsec traffic on qmimux0. For raw IP packets, qmimux_rx_fixup leaves skb->mac_header uninitialized, so xfrm reads a misaligned offset on strict-alignment systems. The crash requires an ARM or ARM64 system using IPsec over a qmi_wwan qmimux0 interface, and the reported consequence is a kernel panic.

The record

CVE
CVE-2025-68192
Published
Dec 16, 2025
Updated
Dec 16, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
network
Privileges
unauthenticated

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=4.12
  2. Affected versionversion=c6adf77953bcec0ad63d7782479452464e50f7a3 <0aabccdcec1f4a36f95829ea2263f845bbc77223
  3. Affected versionversion=c6adf77953bcec0ad63d7782479452464e50f7a3 <4e6b9004f01d0fef5b19778399bc5bf55f8c2d71
  4. Affected versionversion=c6adf77953bcec0ad63d7782479452464e50f7a3 <8ab3b8f958d861a7f725a5be60769106509fbd69
  5. Affected versionversion=c6adf77953bcec0ad63d7782479452464e50f7a3 <ae811175cea35b03ac6d7c910f43a82a43b9c3b3
  6. Affected versionversion=c6adf77953bcec0ad63d7782479452464e50f7a3 <bf527b80b80a282ab5bf1540546211fc35e5cd42
  7. Affected versionversion=c6adf77953bcec0ad63d7782479452464e50f7a3 <d693c47fb902b988f5752182e4f7fbde5e6dcaf9
  8. Affected versionversion=c6adf77953bcec0ad63d7782479452464e50f7a3 <dd03780c29f87c26c0e0bb7e0db528c8109461fb
  9. Affected versionversion=c6adf77953bcec0ad63d7782479452464e50f7a3 <e120f46768d98151ece8756ebd688b0e43dc8b29

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.12; version=c6adf77953bcec0ad63d7782479452464e50f7a3 <0aabccdcec1f4a36f95829ea2263f845bbc77223; version=c6adf77953bcec0ad63d7782479452464e50f7a3 <4e6b9004f01d0fef5b19778399bc5bf55f8c2d71; version=c6adf77953bcec0ad63d7782479452464e50f7a3 <8ab3b8f958d861a7f725a5be60769106509fbd69; version=c6adf77953bcec0ad63d7782479452464e50f7a3 <ae811175cea35b03ac6d7c910f43a82a43b9c3b3; version=c6adf77953bcec0ad63d7782479452464e50f7a3 <bf527b80b80a282ab5bf1540546211fc35e5cd42; version=c6adf77953bcec0ad63d7782479452464e50f7a3 <d693c47fb902b988f5752182e4f7fbde5e6dcaf9; version=c6adf77953bcec0ad63d7782479452464e50f7a3 <dd03780c29f87c26c0e0bb7e0db528c8109461fb; version=c6adf77953bcec0ad63d7782479452464e50f7a3 <e120f46768d98151ece8756ebd688b0e43dc8b29

Published CVSS scores

9.8LinuxCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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