CVE-2025-38485

Kernel crash via buffer-mode teardown race

Published Jul 28, 2025 · Updated Aug 5, 2026

Use-after-free in the Linux kernel allows local users to crash the system by racing FXLS8962AF FIFO buffer shutdown. fxls8962af_fifo_flush() iterates indio_dev->active_scan_mask while buffer-mode teardown can free that bitmap, producing an invalid read in interrupt context. Triggering requires access to an enabled FXLS8962AF or FXLS8964AF IIO device and permission to toggle its buffer during a FIFO flush; the demonstrated consequence is a kernel crash.

CVSS severity7.8
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel allows local users to crash the system by racing FXLS8962AF FIFO buffer shutdown. fxls8962af_fifo_flush() iterates indio_dev->active_scan_mask while buffer-mode teardown can free that bitmap, producing an invalid read in interrupt context. Triggering requires access to an enabled FXLS8962AF or FXLS8964AF IIO device and permission to toggle its buffer during a FIFO flush; the demonstrated consequence is a kernel crash.

The record

CVE
CVE-2025-38485
Published
Jul 28, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 28, 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=5.14
  2. Affected versionversion=79e3a5bdd9efbdf4e1069793d7735b432d641e7c <1803d372460aaa9ae0188a30c9421d3f157f2f04
  3. Affected versionversion=79e3a5bdd9efbdf4e1069793d7735b432d641e7c <1fe16dc1a2f5057772e5391ec042ed7442966c9a
  4. Affected versionversion=79e3a5bdd9efbdf4e1069793d7735b432d641e7c <6ecd61c201b27ad2760b3975437ad2b97d725b98
  5. Affected versionversion=79e3a5bdd9efbdf4e1069793d7735b432d641e7c <bfcda3e1015791b3a63fb4d3aad408da9cf76e8f
  6. Affected versionversion=79e3a5bdd9efbdf4e1069793d7735b432d641e7c <dda42f23a8f5439eaac9521ce0531547d880cc54

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.14; version=79e3a5bdd9efbdf4e1069793d7735b432d641e7c <1803d372460aaa9ae0188a30c9421d3f157f2f04; version=79e3a5bdd9efbdf4e1069793d7735b432d641e7c <1fe16dc1a2f5057772e5391ec042ed7442966c9a; version=79e3a5bdd9efbdf4e1069793d7735b432d641e7c <6ecd61c201b27ad2760b3975437ad2b97d725b98; version=79e3a5bdd9efbdf4e1069793d7735b432d641e7c <bfcda3e1015791b3a63fb4d3aad408da9cf76e8f; version=79e3a5bdd9efbdf4e1069793d7735b432d641e7c <dda42f23a8f5439eaac9521ce0531547d880cc54

Published CVSS scores

7.8UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.0SUSECVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.3SUSECVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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

T1499Endpoint Denial of Service

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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