CVE-2025-68321Network attack vector

Service disruption via allocation-warning log amplification

Published Dec 16, 2025 · Updated Dec 16, 2025

Resource exhaustion in Linux allows remote attackers to disrupt service through sustained traffic to a page-pool network interface. The page_pool allocator performs GFP_ATOMIC receive-path allocations without __GFP_NOWARN, so repeated failures emit expensive stack and memory-state dumps. An unauthenticated peer can reach affected receive paths before firewall or protocol authentication; sustained failures can monopolize logging or fill constrained log storage.

CVSS severity7.5
High
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Linux allows remote attackers to disrupt service through sustained traffic to a page-pool network interface. The page_pool allocator performs GFP_ATOMIC receive-path allocations without __GFP_NOWARN, so repeated failures emit expensive stack and memory-state dumps. An unauthenticated peer can reach affected receive paths before firewall or protocol authentication; sustained failures can monopolize logging or fill constrained log storage.

The record

CVE
CVE-2025-68321
Published
Dec 16, 2025
Updated
Dec 16, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-390, T1499.002
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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0ec2cd5c58793d0c622797cd5fbe26634b357210
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3671a0775952026228ae44e096eb144bca75f8dc
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7613c06ffa89c1e2266fb532e23ef7dfdf269d73
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9835a0fd59a1df5ec0740fdab6d50db68e0f10de
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ab48dc0e23eb714b3f233f8e8f6deed7df2051f5
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f3b52167a0cb23b27414452fbc1278da2ee884fc

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0ec2cd5c58793d0c622797cd5fbe26634b357210; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3671a0775952026228ae44e096eb144bca75f8dc; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7613c06ffa89c1e2266fb532e23ef7dfdf269d73; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9835a0fd59a1df5ec0740fdab6d50db68e0f10de; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ab48dc0e23eb714b3f233f8e8f6deed7df2051f5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f3b52167a0cb23b27414452fbc1278da2ee884fc

Published CVSS scores

5.5Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.5LinuxCVSS: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

CWE-390Detection of Error Condition Without Action
T1499.002Service Exhaustion Flood

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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