CVE-2025-71198

System crash via unsupported wakeup-event configuration

Published Feb 4, 2026 · Updated Feb 4, 2026

NULL pointer dereference in the Linux Kernel st_lsm6dsx IIO driver allows local users to crash the system via wakeup-event configuration. The st_lsm6dsx_acc_channels table advertises event support for sensors such as LSM6DS0 that lack it, causing st_lsm6dsx_write_event() to dereference a NULL wakeup-register pointer. Reachability requires an affected sensor and userspace access to configure its accelerometer wakeup event; triggering the path crashes the kernel.

CVSS severity6.7
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the Linux Kernel st_lsm6dsx IIO driver allows local users to crash the system via wakeup-event configuration. The st_lsm6dsx_acc_channels table advertises event support for sensors such as LSM6DS0 that lack it, causing st_lsm6dsx_write_event() to dereference a NULL wakeup-register pointer. Reachability requires an affected sensor and userspace access to configure its accelerometer wakeup event; triggering the path crashes the kernel.

The record

CVE
CVE-2025-71198
Published
Feb 4, 2026
Updated
Feb 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 4, 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=5.5
  2. Affected versionversion=b5969abfa8b8ed43ebd93479d394f664bd4a5a87 <4d60ffcdedfe2cdb68a1cde19bb292bc67451629
  3. Affected versionversion=b5969abfa8b8ed43ebd93479d394f664bd4a5a87 <7673167fac9323110973a3300637adba7d45de3a
  4. Affected versionversion=b5969abfa8b8ed43ebd93479d394f664bd4a5a87 <81ed6e42d6e555dd978c9dd5e3f7c20cb121221b
  5. Affected versionversion=b5969abfa8b8ed43ebd93479d394f664bd4a5a87 <c34e2e2d67b3bb8d5a6d09b0d6dac845cdd13fb3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linux Kernelversion=5.5; version=b5969abfa8b8ed43ebd93479d394f664bd4a5a87 <4d60ffcdedfe2cdb68a1cde19bb292bc67451629; version=b5969abfa8b8ed43ebd93479d394f664bd4a5a87 <7673167fac9323110973a3300637adba7d45de3a; version=b5969abfa8b8ed43ebd93479d394f664bd4a5a87 <81ed6e42d6e555dd978c9dd5e3f7c20cb121221b; version=b5969abfa8b8ed43ebd93479d394f664bd4a5a87 <c34e2e2d67b3bb8d5a6d09b0d6dac845cdd13fb3

Published CVSS scores

6.7SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
4.4SUSECVSS:3.1/AV:L/AC:L/PR:H/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
Privilegesadmin
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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