CVE-2024-56625

Kernel warning via sleep-unsafe GPIO setter

Published Dec 27, 2024 · Updated May 11, 2026

Improper GPIO handling in affected Linux kernels allows local users to trigger a kernel warning through CAN termination control. The can_set_termination function passes a potentially sleeping termination GPIO to gpiod_set_value, which cannot sleep in that call context. Reachability requires a CAN interface whose termination GPIO can sleep, such as one behind an I2C expander; the documented consequence is a kernel warning.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper GPIO handling in affected Linux kernels allows local users to trigger a kernel warning through CAN termination control. The can_set_termination function passes a potentially sleeping termination GPIO to gpiod_set_value, which cannot sleep in that call context. Reachability requires a CAN interface whose termination GPIO can sleep, such as one behind an I2C expander; the documented consequence is a kernel warning.

The record

CVE
CVE-2024-56625
Published
Dec 27, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 27, 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=5.15
  2. Affected versionversion=6e86a1543c378f2e8837ad88f361b7bf606c80f7 <1ac442f25c19953d2f33b92549628b0aeac83db6
  3. Affected versionversion=6e86a1543c378f2e8837ad88f361b7bf606c80f7 <3b0c5bb437d31a9864f633b85cbc42d2f6c51c96
  4. Affected versionversion=6e86a1543c378f2e8837ad88f361b7bf606c80f7 <46637a608fb1ee871a0ad8bf70d917d5d95ac251
  5. Affected versionversion=6e86a1543c378f2e8837ad88f361b7bf606c80f7 <ee1dfbdd8b4b6de85e96ae2059dc9c1bdb6b49b5
  6. Affected versionversion=6e86a1543c378f2e8837ad88f361b7bf606c80f7 <faa0a1975a6fbce30616775216606eb8d6388ea1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.15; version=6e86a1543c378f2e8837ad88f361b7bf606c80f7 <1ac442f25c19953d2f33b92549628b0aeac83db6; version=6e86a1543c378f2e8837ad88f361b7bf606c80f7 <3b0c5bb437d31a9864f633b85cbc42d2f6c51c96; version=6e86a1543c378f2e8837ad88f361b7bf606c80f7 <46637a608fb1ee871a0ad8bf70d917d5d95ac251; version=6e86a1543c378f2e8837ad88f361b7bf606c80f7 <ee1dfbdd8b4b6de85e96ae2059dc9c1bdb6b49b5; version=6e86a1543c378f2e8837ad88f361b7bf606c80f7 <faa0a1975a6fbce30616775216606eb8d6388ea1

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.

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

No sourced classifications are available.

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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