CVE-2025-37859

Local denial of service via worker rescheduling

Published May 9, 2025 · Updated May 23, 2026

Infinite-loop denial of service in the Linux kernel page pool allows local users to consume CPU and flood kernel logs through a buggy driver. page_pool_release_retry() repeatedly reschedules its delayed release worker after page_pool_inflight() reports a negative in-flight page count. Triggering requires local low-privileged access and a driver that corrupts page-pool accounting; the resulting loop can monopolize a worker and repeatedly emit warnings.

CVSS severity5.5
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Infinite-loop denial of service in the Linux kernel page pool allows local users to consume CPU and flood kernel logs through a buggy driver. page_pool_release_retry() repeatedly reschedules its delayed release worker after page_pool_inflight() reports a negative in-flight page count. Triggering requires local low-privileged access and a driver that corrupts page-pool accounting; the resulting loop can monopolize a worker and repeatedly emit warnings.

The record

CVE
CVE-2025-37859
Published
May 9, 2025
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-835, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 9, 2025CVE publishedPublication date reported by the CVE source.
  2. May 23, 2026Record 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=05f646cb2174d1a4e032b60b99097f5c4b522616 <c3c7c57017ce1d4b2d3788c1fc59e7e39026e158
  2. Affected versionversion=5.3.18 <5.4
  3. Affected versionversion=5.4.5 <5.4.293
  4. Affected versionversion=5.5
  5. Affected versionversion=bf22306d92ca59c59dc4aa3bab14768948193d56
  6. Affected versionversion=c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3 <43130d02baa137033c25297aaae95fd0edc41654
  7. Affected versionversion=c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3 <7204335d1991c23fc615ab76f31f175748a578e1
  8. Affected versionversion=c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3 <738d1812ec2e395e953258aea912ddd867d11a13
  9. Affected versionversion=c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3 <90e089a64504982f8d62f223027cb9f903781f78
  10. Affected versionversion=c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3 <91522aba56e9fcdf64da25ffef9b27f8fad48e0f
  11. Affected versionversion=c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3 <95f17738b86fd198924d874a5639bcdc49c7e5b8
  12. Affected versionversion=c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3 <9f71db4fb82deb889e0bac4a51b34daea7d506a3
  13. Affected versionversion=c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3 <e74e5aa33228c5e2cb4fc80ad103541a7b7805ec

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=05f646cb2174d1a4e032b60b99097f5c4b522616 <c3c7c57017ce1d4b2d3788c1fc59e7e39026e158; version=5.3.18 <5.4; version=5.4.5 <5.4.293; version=5.5; version=bf22306d92ca59c59dc4aa3bab14768948193d56; version=c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3 <43130d02baa137033c25297aaae95fd0edc41654; version=c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3 <7204335d1991c23fc615ab76f31f175748a578e1; version=c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3 <738d1812ec2e395e953258aea912ddd867d11a13; version=c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3 <90e089a64504982f8d62f223027cb9f903781f78; version=c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3 <91522aba56e9fcdf64da25ffef9b27f8fad48e0f; version=c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3 <95f17738b86fd198924d874a5639bcdc49c7e5b8; version=c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3 <9f71db4fb82deb889e0bac4a51b34daea7d506a3; version=c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3 <e74e5aa33228c5e2cb4fc80ad103541a7b7805ec

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')
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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