CVE-2026-31687

Local system hang via nested driver registration

Published Apr 27, 2026 · Updated Apr 27, 2026

Improper locking in Linux kernel OMAP GPIO support allows local users to hang the system during vulnerable driver probing. The omap_gpio_probe path calls omap_mpuio_init, which registers omap_mpuio_driver while the driver core already holds a device lock. The condition requires OMAP GPIO support and entry into the affected probe path; the resulting deadlock interrupts system availability.

CVSS severity5.5
Medium
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

Improper locking in Linux kernel OMAP GPIO support allows local users to hang the system during vulnerable driver probing. The omap_gpio_probe path calls omap_mpuio_init, which registers omap_mpuio_driver while the driver core already holds a device lock. The condition requires OMAP GPIO support and entry into the affected probe path; the resulting deadlock interrupts system availability.

The record

CVE
CVE-2026-31687
Published
Apr 27, 2026
Updated
Apr 27, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-667, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 27, 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=11a78b7944963a8b052be46108d07a3ced9e2762 <1c04c3a4de8d4bcb9202f94c44f26c57c2572308
  2. Affected versionversion=11a78b7944963a8b052be46108d07a3ced9e2762 <2211d77892913804d16c28c7415b82804ab1e54c
  3. Affected versionversion=11a78b7944963a8b052be46108d07a3ced9e2762 <32f08c3ddd6dda6cbb6c9d715de10f21dccde50f
  4. Affected versionversion=11a78b7944963a8b052be46108d07a3ced9e2762 <57bcd3feffa79544c73a1a1872472389a391cc79
  5. Affected versionversion=11a78b7944963a8b052be46108d07a3ced9e2762 <730e5ebff40c852e3ea57b71bf02a4b89c69435f
  6. Affected versionversion=11a78b7944963a8b052be46108d07a3ced9e2762 <86588916e1887a5edb8a9161cd7ae81e47a7ed25
  7. Affected versionversion=11a78b7944963a8b052be46108d07a3ced9e2762 <a29215961d833f4de33a09c3964d31ebc6083033
  8. Affected versionversion=2.6.22
  9. Affected versionversion=8d76b2488eb3cc0717ab81b60622cff4a5f90f79 <53a76425e0764421ba93bb9045d2e454667d5687
  10. Affected versionversion=adc1796eced46b48e23ec200a219d635f33a38ee <673dafb9a86349a12a93151fd467625614dc7e12
  11. Affected versionversion=bc82e5f4d7dc8237ae8cabc73aa46fc93c85d98c <03db4dc9ad6eb91e640b517e00373ce877682854
  12. Affected versionversion=cd0e0a76e40c2e77bcfc88291d00dca22b00158e <a7fa9460b86f810913b6779461d0448e7c11214c

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=11a78b7944963a8b052be46108d07a3ced9e2762 <1c04c3a4de8d4bcb9202f94c44f26c57c2572308; version=11a78b7944963a8b052be46108d07a3ced9e2762 <2211d77892913804d16c28c7415b82804ab1e54c; version=11a78b7944963a8b052be46108d07a3ced9e2762 <32f08c3ddd6dda6cbb6c9d715de10f21dccde50f; version=11a78b7944963a8b052be46108d07a3ced9e2762 <57bcd3feffa79544c73a1a1872472389a391cc79; version=11a78b7944963a8b052be46108d07a3ced9e2762 <730e5ebff40c852e3ea57b71bf02a4b89c69435f; version=11a78b7944963a8b052be46108d07a3ced9e2762 <86588916e1887a5edb8a9161cd7ae81e47a7ed25; version=11a78b7944963a8b052be46108d07a3ced9e2762 <a29215961d833f4de33a09c3964d31ebc6083033; version=2.6.22; version=8d76b2488eb3cc0717ab81b60622cff4a5f90f79 <53a76425e0764421ba93bb9045d2e454667d5687; version=adc1796eced46b48e23ec200a219d635f33a38ee <673dafb9a86349a12a93151fd467625614dc7e12; version=bc82e5f4d7dc8237ae8cabc73aa46fc93c85d98c <03db4dc9ad6eb91e640b517e00373ce877682854; version=cd0e0a76e40c2e77bcfc88291d00dca22b00158e <a7fa9460b86f810913b6779461d0448e7c11214c

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-667Improper Locking
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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