CVE-2025-38207Public exploit

Kernel memory corruption via uprobe PTE overwrite

Published Jul 4, 2025 · Updated May 11, 2026

Memory-management corruption in Linux 3.5 through 6.15.3 allows local users to orphan a uprobe page-table entry through crafted remapping. During vma_complete, uprobe_mmap installs a new anonymous uprobe PTE in an expanded merged VMA, then move_page_tables uses set_pte_at to overwrite it while remapping the prior PTE. Low-privileged local access and a registered zero-offset uprobe plus the documented mmap and mremap sequence are required; the resulting orphaned PTE corrupts memory accounting.

CVSS severity5.5
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory-management corruption in Linux 3.5 through 6.15.3 allows local users to orphan a uprobe page-table entry through crafted remapping. During vma_complete, uprobe_mmap installs a new anonymous uprobe PTE in an expanded merged VMA, then move_page_tables uses set_pte_at to overwrite it while remapping the prior PTE. Low-privileged local access and a registered zero-offset uprobe plus the documented mmap and mremap sequence are required; the resulting orphaned PTE corrupts memory accounting.

The record

CVE
CVE-2025-38207
Published
Jul 4, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 4, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=2b144498350860b6ee9dc57ff27a93ad488de5dc <2b12d06c37fd3a394376f42f026a7478d826ed63
  2. Affected versionversion=2b144498350860b6ee9dc57ff27a93ad488de5dc <58b83b9a9a929611a2a2e7d88f45cb0d786b7ee0
  3. Affected versionversion=3.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2b144498350860b6ee9dc57ff27a93ad488de5dc <2b12d06c37fd3a394376f42f026a7478d826ed63; version=2b144498350860b6ee9dc57ff27a93ad488de5dc <58b83b9a9a929611a2a2e7d88f45cb0d786b7ee0; version=3.5

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
3.3SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
5.5Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

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

No sourced classifications are available.

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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