CVE-2025-22044

Kernel-memory disclosure or crash via truncated family value

Published Apr 16, 2025 · Updated Aug 5, 2026

Out-of-bounds read in the NFIT ioctl path in Linux allows local users with NVDIMM device access to disclose kernel memory or crash the host. The acpi_nfit_ctl function validates call_pkg->nd_family as a 64-bit value, narrows it to int, and then bounds-checks the truncated value, permitting a negative bitmap index after a double fetch. Reachability requires read-write access to /dev/ndctl0 and control of the input race; consequences are an error-oracle kernel-memory disclosure or an oops or panic, not memory modification.

CVSS severity7.1
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Out-of-bounds read in the NFIT ioctl path in Linux allows local users with NVDIMM device access to disclose kernel memory or crash the host. The acpi_nfit_ctl function validates call_pkg->nd_family as a 64-bit value, narrows it to int, and then bounds-checks the truncated value, permitting a negative bitmap index after a double fetch. Reachability requires read-write access to /dev/ndctl0 and control of the input race; consequences are an error-oracle kernel-memory disclosure or an oops or panic, not memory modification.

The record

CVE
CVE-2025-22044
Published
Apr 16, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
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=5.9
  2. Affected versionversion=6450ddbd5d8e83ea9927c7f9076a21f829699e0f <2ff0e408db36c21ed3fa5e3c1e0e687c82cf132f
  3. Affected versionversion=6450ddbd5d8e83ea9927c7f9076a21f829699e0f <4b65cff06a004ac54f6ea8886060f0d07b1ca055
  4. Affected versionversion=6450ddbd5d8e83ea9927c7f9076a21f829699e0f <73851cfceb00cc77d7a0851bc10f2263394c3e87
  5. Affected versionversion=6450ddbd5d8e83ea9927c7f9076a21f829699e0f <85f11291658ab907c4294319c8102450cc75bb96
  6. Affected versionversion=6450ddbd5d8e83ea9927c7f9076a21f829699e0f <92ba06aef65522483784dcbd6697629ddbd4c4f9
  7. Affected versionversion=6450ddbd5d8e83ea9927c7f9076a21f829699e0f <bae5b55e0f327102e78f6a66fb127275e9bc91b6
  8. Affected versionversion=6450ddbd5d8e83ea9927c7f9076a21f829699e0f <c90402d2a226ff7afbe1d0650bee8ecc15a91049
  9. Affected versionversion=6450ddbd5d8e83ea9927c7f9076a21f829699e0f <e71a57c5aaa389d4c3c82f920761262efdd18d38

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.9; version=6450ddbd5d8e83ea9927c7f9076a21f829699e0f <2ff0e408db36c21ed3fa5e3c1e0e687c82cf132f; version=6450ddbd5d8e83ea9927c7f9076a21f829699e0f <4b65cff06a004ac54f6ea8886060f0d07b1ca055; version=6450ddbd5d8e83ea9927c7f9076a21f829699e0f <73851cfceb00cc77d7a0851bc10f2263394c3e87; version=6450ddbd5d8e83ea9927c7f9076a21f829699e0f <85f11291658ab907c4294319c8102450cc75bb96; version=6450ddbd5d8e83ea9927c7f9076a21f829699e0f <92ba06aef65522483784dcbd6697629ddbd4c4f9; version=6450ddbd5d8e83ea9927c7f9076a21f829699e0f <bae5b55e0f327102e78f6a66fb127275e9bc91b6; version=6450ddbd5d8e83ea9927c7f9076a21f829699e0f <c90402d2a226ff7afbe1d0650bee8ecc15a91049; version=6450ddbd5d8e83ea9927c7f9076a21f829699e0f <e71a57c5aaa389d4c3c82f920761262efdd18d38

Published CVSS scores

7.1Linux Kernel CVE TeamCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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 exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo