CVE-2025-68353

Kernel crash via unchecked VXLAN socket pointers

Published Dec 24, 2025 · Updated Dec 24, 2025

NULL-pointer dereference in the Linux kernel VXLAN transmit path allows attackers to crash the kernel during packet transmission. The vxlan_xmit_one function can pass absent sock4 or sock6 pointers into route lookup because earlier changes removed their validity checks. Reachability requires VXLAN traffic during an interface state transition, such as bringing the interface down; the bounded consequence is a kernel oops or panic.

CVSS severityUnavailable
Unscored
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

NULL-pointer dereference in the Linux kernel VXLAN transmit path allows attackers to crash the kernel during packet transmission. The vxlan_xmit_one function can pass absent sock4 or sock6 pointers into route lookup because earlier changes removed their validity checks. Reachability requires VXLAN traffic during an interface state transition, such as bringing the interface down; the bounded consequence is a kernel oops or panic.

The record

CVE
CVE-2025-68353
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 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=6.7
  2. Affected versionversion=6f19b2c136d98a84d79030b53e23d405edfdc783 <1f73a56f986005f0bc64ed23873930e2ee4f5911
  3. Affected versionversion=6f19b2c136d98a84d79030b53e23d405edfdc783 <4ac26aafdc8c7271414e2e7c0b2cb266a26591bc

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=6.7; version=6f19b2c136d98a84d79030b53e23d405edfdc783 <1f73a56f986005f0bc64ed23873930e2ee4f5911; version=6f19b2c136d98a84d79030b53e23d405edfdc783 <4ac26aafdc8c7271414e2e7c0b2cb266a26591bc

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
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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