CVE-2018-25062

Kernel crash via uninitialized policy-walk cleanup

Published Jan 1, 2023 · Updated Aug 5, 2024

Denial of service in ElementalX 6.x for Nexus 9 allows remote authenticated users to crash the kernel through an aborted IPsec policy dump. The xfrm_dump_policy_done cleanup path finalizes an uninitialized xfrm_policy_walk when a full Netlink receive buffer aborts the first dump before setup. A low-privileged adjacent attacker can interrupt device availability by triggering the kernel crash.

CVSS severity3.5
Low
EPSS probability0.90%
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 ElementalX 6.x for Nexus 9 allows remote authenticated users to crash the kernel through an aborted IPsec policy dump. The xfrm_dump_policy_done cleanup path finalizes an uninitialized xfrm_policy_walk when a full Netlink receive buffer aborts the first dump before setup. A low-privileged adjacent attacker can interrupt device availability by triggering the kernel crash.

The record

CVE
CVE-2018-25062
Published
Jan 1, 2023
Updated
Aug 5, 2024
Vendor
flar2
Product
ElementalX
Classifications
CWE-404, T1499.004
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 1, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record 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.x

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

flar2 · ElementalXversion=6.x

Published CVSS scores

2.3VulDBAV:A/AC:M/Au:S/C:N/I:N/A:P
3.5VulDBCVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.5VulDBCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

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)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
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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