CVE-2026-72479

Kernel-memory disclosure via ignored I2C read failure

Published Aug 15, 2026 · Updated Aug 15, 2026

Use of uninitialized stack memory in the Linux MMA8452 driver allows local users to read kernel memory through the IIO interface. mma8452_read() returns success when an I2C block read fails but runtime power-state restoration succeeds, so mma8452_read_raw() consumes an uninitialized stack buffer. The path requires an MMA8452 accelerometer, a failed I2C read, and local access to its raw IIO sensor data; the documented consequence is information disclosure.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use of uninitialized stack memory in the Linux MMA8452 driver allows local users to read kernel memory through the IIO interface. mma8452_read() returns success when an I2C block read fails but runtime power-state restoration succeeds, so mma8452_read_raw() consumes an uninitialized stack buffer. The path requires an MMA8452 accelerometer, a failed I2C read, and local access to its raw IIO sensor data; the documented consequence is information disclosure.

The record

CVE
CVE-2026-72479
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-824
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=4.7
  2. Affected versionversion=96c0cb2bbfe0a58bd0c37cf34d50a20f9cd75aa8 <1cddef80a180af74c33d2f26c962ce92b60fded4
  3. Affected versionversion=96c0cb2bbfe0a58bd0c37cf34d50a20f9cd75aa8 <5bdff291d20c31b365d9ddfe9c426fbfb41da5bb
  4. Affected versionversion=96c0cb2bbfe0a58bd0c37cf34d50a20f9cd75aa8 <b488055e81d9faaaf2f8aaff45f9944040ac4493
  5. Affected versionversion=96c0cb2bbfe0a58bd0c37cf34d50a20f9cd75aa8 <b4932fc325e84a3233413daf230b043818c8a824
  6. Affected versionversion=96c0cb2bbfe0a58bd0c37cf34d50a20f9cd75aa8 <eed69f8a10b82989ad732ace0fb43a9fb4e7fe35
  7. Affected versionversion=96c0cb2bbfe0a58bd0c37cf34d50a20f9cd75aa8 <f3d413e701c5e54bef736b638967724dda880365
  8. Affected versionversion=96c0cb2bbfe0a58bd0c37cf34d50a20f9cd75aa8 <f3d905ea1e4996d933074481e80d96ecd74a9904
  9. Affected versionversion=96c0cb2bbfe0a58bd0c37cf34d50a20f9cd75aa8 <f9ec3f3e9cf27dd06cd3725eeaa44e3ce46be893

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.7; version=96c0cb2bbfe0a58bd0c37cf34d50a20f9cd75aa8 <1cddef80a180af74c33d2f26c962ce92b60fded4; version=96c0cb2bbfe0a58bd0c37cf34d50a20f9cd75aa8 <5bdff291d20c31b365d9ddfe9c426fbfb41da5bb; version=96c0cb2bbfe0a58bd0c37cf34d50a20f9cd75aa8 <b488055e81d9faaaf2f8aaff45f9944040ac4493; version=96c0cb2bbfe0a58bd0c37cf34d50a20f9cd75aa8 <b4932fc325e84a3233413daf230b043818c8a824; version=96c0cb2bbfe0a58bd0c37cf34d50a20f9cd75aa8 <eed69f8a10b82989ad732ace0fb43a9fb4e7fe35; version=96c0cb2bbfe0a58bd0c37cf34d50a20f9cd75aa8 <f3d413e701c5e54bef736b638967724dda880365; version=96c0cb2bbfe0a58bd0c37cf34d50a20f9cd75aa8 <f3d905ea1e4996d933074481e80d96ecd74a9904; version=96c0cb2bbfe0a58bd0c37cf34d50a20f9cd75aa8 <f9ec3f3e9cf27dd06cd3725eeaa44e3ce46be893

Published CVSS scores

No CVSS assessment is available in this record.

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-824Access of Uninitialized Pointer

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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