CVE-2024-36898

Kernel data exposure via uninitialized GPIO event queue

Published May 30, 2024 · Updated Aug 5, 2026

Uninitialized-resource use in gpiolib cdev in Linux allows local users to read uninitialized GPIO edge-event data through its character-device API. In edge_detector_update, the already-software-debounced path updates edge flags but fails to allocate the request's event kfifo before events are written and returned to userspace. Triggering the exposure requires access to a GPIO line requested with software debounce and then reconfigured to enable edge detection.

CVSS severity7.8
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uninitialized-resource use in gpiolib cdev in Linux allows local users to read uninitialized GPIO edge-event data through its character-device API. In edge_detector_update, the already-software-debounced path updates edge flags but fails to allocate the request's event kfifo before events are written and returned to userspace. Triggering the exposure requires access to a GPIO line requested with software debounce and then reconfigured to enable edge detection.

The record

CVE
CVE-2024-36898
Published
May 30, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-908, T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 30, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=5.10
  2. Affected versionversion=65cff70464068a823b3f4a28074000febdce0630 <1a51e24404d77bb3307c1e39eee0d8e86febb1a5
  3. Affected versionversion=65cff70464068a823b3f4a28074000febdce0630 <883e4bbf06eb5fb7482679e4edb201093e9f55a2
  4. Affected versionversion=65cff70464068a823b3f4a28074000febdce0630 <bd7139a70ee8d8ea872b223e043730cf6f5e2b0e
  5. Affected versionversion=65cff70464068a823b3f4a28074000febdce0630 <c87cc32bc48b187067e089b15ab7a6a7eed5767d
  6. Affected versionversion=65cff70464068a823b3f4a28074000febdce0630 <ee0166b637a5e376118e9659e5b4148080f1d27e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.10; version=65cff70464068a823b3f4a28074000febdce0630 <1a51e24404d77bb3307c1e39eee0d8e86febb1a5; version=65cff70464068a823b3f4a28074000febdce0630 <883e4bbf06eb5fb7482679e4edb201093e9f55a2; version=65cff70464068a823b3f4a28074000febdce0630 <bd7139a70ee8d8ea872b223e043730cf6f5e2b0e; version=65cff70464068a823b3f4a28074000febdce0630 <c87cc32bc48b187067e089b15ab7a6a7eed5767d; version=65cff70464068a823b3f4a28074000febdce0630 <ee0166b637a5e376118e9659e5b4148080f1d27e

Published CVSS scores

7.8NIST NVDCVSS: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

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-908Use of Uninitialized Resource
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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