CVE-2024-44931

Kernel-memory disclosure via unsanitized GPIO offset

Published Aug 26, 2024 · Updated May 11, 2026

Out-of-bounds read in affected Linux kernels allows local users to disclose kernel memory through a crafted GPIO ioctl offset. gpio_device_get_desc() checks the userspace offset but then uses it directly to index gdev->descs, allowing speculative execution to read past the descriptor array. Ability to issue GPIO ioctls is required, and the published impact is information disclosure without reported integrity or availability effects.

CVSS severity5.5
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in affected Linux kernels allows local users to disclose kernel memory through a crafted GPIO ioctl offset. gpio_device_get_desc() checks the userspace offset but then uses it directly to index gdev->descs, allowing speculative execution to read past the descriptor array. Ability to issue GPIO ioctls is required, and the published impact is information disclosure without reported integrity or availability effects.

The record

CVE
CVE-2024-44931
Published
Aug 26, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 26, 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=4.6
  2. Affected versionversion=521a2ad6f862a28e2e43cb3e254a26bf0f9452e9 <18504710442671b02d00e6db9804a0ad26c5a479
  3. Affected versionversion=521a2ad6f862a28e2e43cb3e254a26bf0f9452e9 <1b955f786a4bcde8c0ccb2b7d519def2acb6f3cc
  4. Affected versionversion=521a2ad6f862a28e2e43cb3e254a26bf0f9452e9 <672c19165fc96dfad531a5458e0b3cdab414aae4
  5. Affected versionversion=521a2ad6f862a28e2e43cb3e254a26bf0f9452e9 <9ae2d8e75b741dbcb0da374753f972410e83b5f3
  6. Affected versionversion=521a2ad6f862a28e2e43cb3e254a26bf0f9452e9 <9d682e89c44bd5819b01f3fbb45a8e3681a4b6d0
  7. Affected versionversion=521a2ad6f862a28e2e43cb3e254a26bf0f9452e9 <c65ab97efcd438cb4e9f299400f2ea55251f3a67
  8. Affected versionversion=521a2ad6f862a28e2e43cb3e254a26bf0f9452e9 <d776c0486b03a5c4afca65b8ff44573592bf93bb
  9. Affected versionversion=521a2ad6f862a28e2e43cb3e254a26bf0f9452e9 <d795848ecce24a75dfd46481aee066ae6fe39775

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.6; version=521a2ad6f862a28e2e43cb3e254a26bf0f9452e9 <18504710442671b02d00e6db9804a0ad26c5a479; version=521a2ad6f862a28e2e43cb3e254a26bf0f9452e9 <1b955f786a4bcde8c0ccb2b7d519def2acb6f3cc; version=521a2ad6f862a28e2e43cb3e254a26bf0f9452e9 <672c19165fc96dfad531a5458e0b3cdab414aae4; version=521a2ad6f862a28e2e43cb3e254a26bf0f9452e9 <9ae2d8e75b741dbcb0da374753f972410e83b5f3; version=521a2ad6f862a28e2e43cb3e254a26bf0f9452e9 <9d682e89c44bd5819b01f3fbb45a8e3681a4b6d0; version=521a2ad6f862a28e2e43cb3e254a26bf0f9452e9 <c65ab97efcd438cb4e9f299400f2ea55251f3a67; version=521a2ad6f862a28e2e43cb3e254a26bf0f9452e9 <d776c0486b03a5c4afca65b8ff44573592bf93bb; version=521a2ad6f862a28e2e43cb3e254a26bf0f9452e9 <d795848ecce24a75dfd46481aee066ae6fe39775

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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-125Out-of-bounds Read

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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