CVE-2024-50268

Kernel memory compromise via debugfs array over-index

Published Nov 19, 2024 · Updated Aug 5, 2026

Out-of-bounds access in the UCSI CCG driver in Linux allows local users to compromise kernel memory through a crafted debugfs command. The ucsi_ccg_update_set_new_cam_cmd() path uses a command-derived new_cam value of up to 255 to read uc->updated[new_cam], although the array contains only 30 elements. Local access to the debugfs command interface is required; exploitation can expose or alter kernel state or interrupt the system.

CVSS severity7.8
High
EPSS probability0.26%
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 access in the UCSI CCG driver in Linux allows local users to compromise kernel memory through a crafted debugfs command. The ucsi_ccg_update_set_new_cam_cmd() path uses a command-derived new_cam value of up to 255 to read uc->updated[new_cam], although the array contains only 30 elements. Local access to the debugfs command interface is required; exploitation can expose or alter kernel state or interrupt the system.

The record

CVE
CVE-2024-50268
Published
Nov 19, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 19, 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=170a6726d0e266f2c8f306e3d61715c32f4ee41e <3a2ba841659a0f15102585120dea75d8d5209616
  2. Affected versionversion=170a6726d0e266f2c8f306e3d61715c32f4ee41e <604314ecd682913925980dc955caea2d036eab5f
  3. Affected versionversion=170a6726d0e266f2c8f306e3d61715c32f4ee41e <69e19774f15e12dda6c6c58001d059e30895009b
  4. Affected versionversion=170a6726d0e266f2c8f306e3d61715c32f4ee41e <7dd08a0b4193087976db6b3ee7807de7e8316f96
  5. Affected versionversion=170a6726d0e266f2c8f306e3d61715c32f4ee41e <8f47984b35f3be0cfc652c2ca358d5768ea3456b
  6. Affected versionversion=170a6726d0e266f2c8f306e3d61715c32f4ee41e <d76923164705821aa1b01b8d9d1741f20c654ab4
  7. Affected versionversion=5.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=170a6726d0e266f2c8f306e3d61715c32f4ee41e <3a2ba841659a0f15102585120dea75d8d5209616; version=170a6726d0e266f2c8f306e3d61715c32f4ee41e <604314ecd682913925980dc955caea2d036eab5f; version=170a6726d0e266f2c8f306e3d61715c32f4ee41e <69e19774f15e12dda6c6c58001d059e30895009b; version=170a6726d0e266f2c8f306e3d61715c32f4ee41e <7dd08a0b4193087976db6b3ee7807de7e8316f96; version=170a6726d0e266f2c8f306e3d61715c32f4ee41e <8f47984b35f3be0cfc652c2ca358d5768ea3456b; version=170a6726d0e266f2c8f306e3d61715c32f4ee41e <d76923164705821aa1b01b8d9d1741f20c654ab4; version=5.6

Published CVSS scores

7.8Linux Kernel CVE TeamCVSS: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.

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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.

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Technologies

Your stack

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Your stack

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