CVE-2025-22034Public exploit

Memory-offlining hang via device-exclusive hugetlb pages

Published Apr 16, 2025 · Updated Aug 5, 2026

Denial of service in affected Linux kernel releases allows local users to obstruct reclaim and hang memory offlining with device-exclusive pages. mm/gup.c permits FOLL_SPLIT_PMD on hugetlb VMAs, creating device-exclusive PTEs whose mapcount handling breaks folio migration, swapout, splitting, and hardware-poison processing. Reachability requires local low-privileged access and an HMM-capable device path; affected folios resist reclaim, and privileged memory offlining can loop indefinitely.

CVSS severity5.5
Medium
EPSS probability0.28%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Denial of service in affected Linux kernel releases allows local users to obstruct reclaim and hang memory offlining with device-exclusive pages. mm/gup.c permits FOLL_SPLIT_PMD on hugetlb VMAs, creating device-exclusive PTEs whose mapcount handling breaks folio migration, swapout, splitting, and hardware-poison processing. Reachability requires local low-privileged access and an HMM-capable device path; affected folios resist reclaim, and privileged memory offlining can loop indefinitely.

The record

CVE
CVE-2025-22034
Published
Apr 16, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=6.10
  2. Affected versionversion=9cb28da54643ad464c47585cd5866c30b0218e67 <2e877ff3492267def06dd50cb165dc9ab8838e7d
  3. Affected versionversion=9cb28da54643ad464c47585cd5866c30b0218e67 <48d28417c66cce2f3b0ba773fcb6695a56eff220
  4. Affected versionversion=9cb28da54643ad464c47585cd5866c30b0218e67 <8977752c8056a6a094a279004a49722da15bace3
  5. Affected versionversion=9cb28da54643ad464c47585cd5866c30b0218e67 <fd900832e8440046627b60697687ab5d04398008

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.10; version=9cb28da54643ad464c47585cd5866c30b0218e67 <2e877ff3492267def06dd50cb165dc9ab8838e7d; version=9cb28da54643ad464c47585cd5866c30b0218e67 <48d28417c66cce2f3b0ba773fcb6695a56eff220; version=9cb28da54643ad464c47585cd5866c30b0218e67 <8977752c8056a6a094a279004a49722da15bace3; version=9cb28da54643ad464c47585cd5866c30b0218e67 <fd900832e8440046627b60697687ab5d04398008

Published CVSS scores

5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.8UbuntuCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.5NVDCVSS: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.

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

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 exploitPublished

Weakness, pattern, technique

T1499.001OS Exhaustion Flood

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

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