CVE-2023-52512

Local service interruption via unchecked GPIO index

Published Mar 2, 2024 · Updated May 11, 2026

Out-of-bounds write in the WPCM450 pin controller in Linux allows local users to interrupt service via an invalid GPIO bank index. The wpcm450_gpio_register function indexes pctrl->gpio_bank with reg and writes through that pointer before checking reg against WPCM450_NUM_BANKS. Reachability requires the WPCM450 pinctrl driver to process an out-of-range GPIO bank index; the resulting memory corruption can crash the kernel.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in the WPCM450 pin controller in Linux allows local users to interrupt service via an invalid GPIO bank index. The wpcm450_gpio_register function indexes pctrl->gpio_bank with reg and writes through that pointer before checking reg against WPCM450_NUM_BANKS. Reachability requires the WPCM450 pinctrl driver to process an out-of-range GPIO bank index; the resulting memory corruption can crash the kernel.

The record

CVE
CVE-2023-52512
Published
Mar 2, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-787, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 2, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=5.18
  2. Affected versionversion=a1d1e0e3d80a870cc37a6c064994b89e963d2b58 <6c18c386fd13dbb3ff31a1086dabb526780d9bda
  3. Affected versionversion=a1d1e0e3d80a870cc37a6c064994b89e963d2b58 <87d315a34133edcb29c4cadbf196ec6c30dfd47b
  4. Affected versionversion=a1d1e0e3d80a870cc37a6c064994b89e963d2b58 <c9d7cac0fd27c74dd368e80dc4b5d0f9f2e13cf8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.18; version=a1d1e0e3d80a870cc37a6c064994b89e963d2b58 <6c18c386fd13dbb3ff31a1086dabb526780d9bda; version=a1d1e0e3d80a870cc37a6c064994b89e963d2b58 <87d315a34133edcb29c4cadbf196ec6c30dfd47b; version=a1d1e0e3d80a870cc37a6c064994b89e963d2b58 <c9d7cac0fd27c74dd368e80dc4b5d0f9f2e13cf8

Published CVSS scores

5.5CISA-ADPCVSS: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 11, 2026Sep 17, 2026
Latest reporting daySep 17, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
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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