CVE-2024-42100

Kernel crash via invalid clock pointer dereference

Published Jul 30, 2024 · Updated May 23, 2026

Invalid pointer dereference in the Linux sunxi-ng clock driver allows local users to crash an affected kernel during probe. sunxi_ccu_probe passes every desc->hw_clocks->hws entry to hw_to_ccu_common, which assumes that clk_hw is embedded in ccu_common and computes an invalid container pointer for other clock types. Reachability requires an affected Allwinner clock description containing a non-ccu_common clock, such as a fixed-factor clock; the consequence is limited to availability.

CVSS severity5.5
Medium
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

Invalid pointer dereference in the Linux sunxi-ng clock driver allows local users to crash an affected kernel during probe. sunxi_ccu_probe passes every desc->hw_clocks->hws entry to hw_to_ccu_common, which assumes that clk_hw is embedded in ccu_common and computes an invalid container pointer for other clock types. Reachability requires an affected Allwinner clock description containing a non-ccu_common clock, such as a fixed-factor clock; the consequence is limited to availability.

The record

CVE
CVE-2024-42100
Published
Jul 30, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 30, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=547263745e15a038ec3954b5c283805529377626 <14c78d69dbca6a28af14095f639ec4318ec07fdc
  2. Affected versionversion=6.6.31 <6.6.39
  3. Affected versionversion=6.8.10 <6.9
  4. Affected versionversion=6.9
  5. Affected versionversion=761cbd9c0e4ed082b548bf6a0de25eebad24309d
  6. Affected versionversion=b914ec33b391ec766545a41f0cfc0de3e0b388d7 <7a0e2738cb6da5a55c9908dff333600aeb263e07
  7. Affected versionversion=b914ec33b391ec766545a41f0cfc0de3e0b388d7 <ea977d742507e534d9fe4f4d74256f6b7f589338

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=547263745e15a038ec3954b5c283805529377626 <14c78d69dbca6a28af14095f639ec4318ec07fdc; version=6.6.31 <6.6.39; version=6.8.10 <6.9; version=6.9; version=761cbd9c0e4ed082b548bf6a0de25eebad24309d; version=b914ec33b391ec766545a41f0cfc0de3e0b388d7 <7a0e2738cb6da5a55c9908dff333600aeb263e07; version=b914ec33b391ec766545a41f0cfc0de3e0b388d7 <ea977d742507e534d9fe4f4d74256f6b7f589338

Published CVSS scores

5.5NIST National Vulnerability DatabaseCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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