🛡️ CVE-2025-22044 — kernel

🟠 CVSS 7.1 — High ✅ No Known Exploit NVD
7.1
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

acpi: nfit: fix narrowing conversion in acpi_nfit_ctl

In the Linux kernel, the following vulnerability has been resolved:

acpi: nfit: fix narrowing conversion in acpi_nfit_ctl

Syzkaller has reported a warning in to_nfit_bus_uuid(): "only secondary

bus families can be translated". This warning is emited if the argument

is equal to NVDIMM_BUS_FAMILY_NFIT == 0. Function acpi_nfit_ctl() first

verifies that a user-provided value call_pkg->nd_family of type u64 is

not equal to 0. Then the value is converted to int, and only after that

is compared to NVDIMM_BUS_FAMILY_MAX. This can lead to passing an invalid

argument to acpi_nfit_ctl(), if call_pkg->nd_family is non-zero, while

the lower 32 bits are zero.

Furthermore, it is best to return EINVAL immediately upon seeing the

invalid user input. The WARNING is insufficient to prevent further

undefined behavior based on other invalid user input.

All checks of the input value should be applied to the original variable

call_pkg->nd_family.

[iweiny: update commit message]

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability high.

Affected software

CVE-2025-22044 is recorded against 2 packages.

  • kernel (from 6.14.0 up to 6.14.2)
  • linux-kernel (from 6.14 up to 6.14.2)

Timeline and source

Published on 16 April 2025 and last revised on 6 August 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
lists.debian.org (Web)
lists.debian.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2025-22044 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity High
CVSS Score 7.1
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2025-04-16
Updated 2026-08-12
Modified 2026-08-06

Affected Packages

Software From version Fixed in
kernel 6.14.0 6.14.2
linux-kernel 6.14 6.14.2

References

Similar Threats

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