CVE-2026-31761

Local privilege escalation via premature IIO registration

Published May 1, 2026 · Updated May 1, 2026

Use-after-free in the MPU3050 IIO driver in Linux Kernel allows local users to gain kernel privileges through local IIO interfaces. mpu3050_common_probe registers the IIO device before buffer and trigger initialization completes, exposing callbacks to freed or partially initialized state during probe or removal. An MPU3050 device must be present; a basic local user can hammer its sysfs attributes or IIO character device to disclose or modify kernel memory, crash or hang the host, or hijack control flow.

CVSS severity7.8
High
EPSS probability0.10%
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 MPU3050 IIO driver in Linux Kernel allows local users to gain kernel privileges through local IIO interfaces. mpu3050_common_probe registers the IIO device before buffer and trigger initialization completes, exposing callbacks to freed or partially initialized state during probe or removal. An MPU3050 device must be present; a basic local user can hammer its sysfs attributes or IIO character device to disclose or modify kernel memory, crash or hang the host, or hijack control flow.

The record

CVE
CVE-2026-31761
Published
May 1, 2026
Updated
May 1, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 2026CVE publishedPublication date reported by the CVE source.
  2. May 1, 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=3904b28efb2c780c23dcddfb87e07fe0230661e5 <051ca43b0e0e4b66bfd349cd53ccf231ad1d69b7
  2. Affected versionversion=3904b28efb2c780c23dcddfb87e07fe0230661e5 <22487ef85f6dd9499ddf49b85a08afc50a3f1992
  3. Affected versionversion=3904b28efb2c780c23dcddfb87e07fe0230661e5 <2a4537653d200fda2a8516083459f8ff6194f8fc
  4. Affected versionversion=3904b28efb2c780c23dcddfb87e07fe0230661e5 <4c05799449108fb0e0a6bd30e65fffc71e60db4d
  5. Affected versionversion=3904b28efb2c780c23dcddfb87e07fe0230661e5 <59a317f8215674c8330817770497301bfb2c1b99
  6. Affected versionversion=3904b28efb2c780c23dcddfb87e07fe0230661e5 <92f18aa86302fe83e0726a1191015f427d4ff056
  7. Affected versionversion=3904b28efb2c780c23dcddfb87e07fe0230661e5 <caec338f91469f0a70b68165185afa3abc994545
  8. Affected versionversion=3904b28efb2c780c23dcddfb87e07fe0230661e5 <cc3de12a5612ee25df7fb549cb7b3e4cc8bfaf9c
  9. Affected versionversion=4.10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=3904b28efb2c780c23dcddfb87e07fe0230661e5 <051ca43b0e0e4b66bfd349cd53ccf231ad1d69b7; version=3904b28efb2c780c23dcddfb87e07fe0230661e5 <22487ef85f6dd9499ddf49b85a08afc50a3f1992; version=3904b28efb2c780c23dcddfb87e07fe0230661e5 <2a4537653d200fda2a8516083459f8ff6194f8fc; version=3904b28efb2c780c23dcddfb87e07fe0230661e5 <4c05799449108fb0e0a6bd30e65fffc71e60db4d; version=3904b28efb2c780c23dcddfb87e07fe0230661e5 <59a317f8215674c8330817770497301bfb2c1b99; version=3904b28efb2c780c23dcddfb87e07fe0230661e5 <92f18aa86302fe83e0726a1191015f427d4ff056; version=3904b28efb2c780c23dcddfb87e07fe0230661e5 <caec338f91469f0a70b68165185afa3abc994545; version=3904b28efb2c780c23dcddfb87e07fe0230661e5 <cc3de12a5612ee25df7fb549cb7b3e4cc8bfaf9c; version=4.10

Published CVSS scores

7.8Linux kernel CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

T1068Exploitation for Privilege Escalation

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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