CVE-2026-53184Network attack vector

Remote kernel fault via stale skb device pointer

Published Jun 25, 2026 · Updated Jun 25, 2026

Invalid pointer dereference in the Linux kernel allows remote attackers to trigger a general protection fault via UDP traffic to a sockmap socket. On the UDP receive path, skb->dev retains a dead dev_scratch integer after dequeue, and bpf_skc_lookup() dereferences it as a net_device pointer. The remote trigger requires an exposed UDP socket whose sockmap verdict program calls a socket-lookup helper; the resulting softirq fault interrupts service.

CVSS severity7.5
High
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Invalid pointer dereference in the Linux kernel allows remote attackers to trigger a general protection fault via UDP traffic to a sockmap socket. On the UDP receive path, skb->dev retains a dead dev_scratch integer after dequeue, and bpf_skc_lookup() dereferences it as a net_device pointer. The remote trigger requires an exposed UDP socket whose sockmap verdict program calls a socket-lookup helper; the resulting softirq fault interrupts service.

The record

CVE
CVE-2026-53184
Published
Jun 25, 2026
Updated
Jun 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=6.0
  2. Affected versionversion=965b57b469a589d64d81b1688b38dcb537011bb0 <1b585673a2249f13678e7ac443ac683ba767e0b6
  3. Affected versionversion=965b57b469a589d64d81b1688b38dcb537011bb0 <263779a6beff03b8b06f6d25566cb0f45af361f2
  4. Affected versionversion=965b57b469a589d64d81b1688b38dcb537011bb0 <3c94f241f776562c489876ff506f366224565c21
  5. Affected versionversion=965b57b469a589d64d81b1688b38dcb537011bb0 <6822eed69572000a181fa4e31fceacc60918c471
  6. Affected versionversion=965b57b469a589d64d81b1688b38dcb537011bb0 <7d6d92d000ebe3a845a17c165c1d3a70c5d84fe1
  7. Affected versionversion=965b57b469a589d64d81b1688b38dcb537011bb0 <90d35188aaa92b8f8b23f66335e0e91bf60103a3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.0; version=965b57b469a589d64d81b1688b38dcb537011bb0 <1b585673a2249f13678e7ac443ac683ba767e0b6; version=965b57b469a589d64d81b1688b38dcb537011bb0 <263779a6beff03b8b06f6d25566cb0f45af361f2; version=965b57b469a589d64d81b1688b38dcb537011bb0 <3c94f241f776562c489876ff506f366224565c21; version=965b57b469a589d64d81b1688b38dcb537011bb0 <6822eed69572000a181fa4e31fceacc60918c471; version=965b57b469a589d64d81b1688b38dcb537011bb0 <7d6d92d000ebe3a845a17c165c1d3a70c5d84fe1; version=965b57b469a589d64d81b1688b38dcb537011bb0 <90d35188aaa92b8f8b23f66335e0e91bf60103a3

Published CVSS scores

7.5kernel.orgCVSS:3.1/AV:N/AC:L/PR:N/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)
Vectornetwork
Privilegesunauthenticated
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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