CVE-2025-39719

Kernel memory disclosure or crash via incorrect bound

Published Sep 5, 2025 · Updated Sep 5, 2025

Out-of-bounds read in the Linux BNO055 IMU driver allows local users to disclose kernel memory or crash the system through driver attributes. The bno055_get_regmask() loop bounds hw_xlate iteration by the longer vals array for bno055_gyr_scale, allowing a read past hw_xlate if no earlier match stops the loop. Exploitation requires low-privileged local access to the relevant IIO driver attribute on a system using a Bosch BNO055 IMU; upstream states that a match should normally stop the loop before the invalid read.

CVSS severity7.1
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in the Linux BNO055 IMU driver allows local users to disclose kernel memory or crash the system through driver attributes. The bno055_get_regmask() loop bounds hw_xlate iteration by the longer vals array for bno055_gyr_scale, allowing a read past hw_xlate if no earlier match stops the loop. Exploitation requires low-privileged local access to the relevant IIO driver attribute on a system using a Bosch BNO055 IMU; upstream states that a match should normally stop the loop before the invalid read.

The record

CVE
CVE-2025-39719
Published
Sep 5, 2025
Updated
Sep 5, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 5, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 5, 2025Record 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=4aefe1c2bd0cb0223130671d459cd16efa3d3462 <399b883ec828e436f1a721bf8551b4da8727e65b
  2. Affected versionversion=4aefe1c2bd0cb0223130671d459cd16efa3d3462 <4808ca3aa30ae857454d0b41d2d0bf161a312b45
  3. Affected versionversion=4aefe1c2bd0cb0223130671d459cd16efa3d3462 <50e823a23816b792daf6e8405f8d6045952bb90e
  4. Affected versionversion=4aefe1c2bd0cb0223130671d459cd16efa3d3462 <5c2b601922c064f7be70ae8621277f18d1ffec59
  5. Affected versionversion=4aefe1c2bd0cb0223130671d459cd16efa3d3462 <a0691ab6334f1769acc64ea9e319414a682ff45d
  6. Affected versionversion=6.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4aefe1c2bd0cb0223130671d459cd16efa3d3462 <399b883ec828e436f1a721bf8551b4da8727e65b; version=4aefe1c2bd0cb0223130671d459cd16efa3d3462 <4808ca3aa30ae857454d0b41d2d0bf161a312b45; version=4aefe1c2bd0cb0223130671d459cd16efa3d3462 <50e823a23816b792daf6e8405f8d6045952bb90e; version=4aefe1c2bd0cb0223130671d459cd16efa3d3462 <5c2b601922c064f7be70ae8621277f18d1ffec59; version=4aefe1c2bd0cb0223130671d459cd16efa3d3462 <a0691ab6334f1769acc64ea9e319414a682ff45d; version=6.1

Published CVSS scores

7.1NIST NVDCVSS: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.

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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

CWE-125Out-of-bounds Read

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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