CVE-2025-38372

Local service interruption via unlocked xarray access

Published Jul 25, 2025 · Updated Aug 5, 2026

A race condition in Linux kernel RDMA/mlx5 implicit ODP handling allows local users to cause a denial of service through page-fault processing. In drivers/infiniband/hw/mlx5/odp.c, pagefault_mr calls __xa_store and __xa_erase without the lock required for safe RCU access. The condition requires low-privileged local access and an mlx5 RDMA implicit ODP page fault; observed effects include a lockdep warning, and Ubuntu rates the availability impact as high.

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

What happened

A race condition in Linux kernel RDMA/mlx5 implicit ODP handling allows local users to cause a denial of service through page-fault processing. In drivers/infiniband/hw/mlx5/odp.c, pagefault_mr calls __xa_store and __xa_erase without the lock required for safe RCU access. The condition requires low-privileged local access and an mlx5 RDMA implicit ODP page fault; observed effects include a lockdep warning, and Ubuntu rates the availability impact as high.

The record

CVE
CVE-2025-38372
Published
Jul 25, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 25, 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

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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=6.12.13 <6.12.37
  2. Affected versionversion=6.13.2 <6.14
  3. Affected versionversion=6.14
  4. Affected versionversion=7cc8f681f6d4ae4478ae0f60485fc768f2b450da <9d2ef890e49963b768d4fe5a33029aacd9f6b93f
  5. Affected versionversion=d3d930411ce390e532470194296658a960887773 <2c6b640ea08bff1a192bf87fa45246ff1e40767c
  6. Affected versionversion=d3d930411ce390e532470194296658a960887773 <ebebffb47c78f63ba7e4fbde393e44af38b7625d
  7. Affected versionversion=edfb65dbb9ffd3102f3ff4dd21316158e56f1976

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.12.13 <6.12.37; version=6.13.2 <6.14; version=6.14; version=7cc8f681f6d4ae4478ae0f60485fc768f2b450da <9d2ef890e49963b768d4fe5a33029aacd9f6b93f; version=d3d930411ce390e532470194296658a960887773 <2c6b640ea08bff1a192bf87fa45246ff1e40767c; version=d3d930411ce390e532470194296658a960887773 <ebebffb47c78f63ba7e4fbde393e44af38b7625d; version=edfb65dbb9ffd3102f3ff4dd21316158e56f1976

Published CVSS scores

5.5UbuntuCVSS: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

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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