CVE-2024-38541

Kernel memory corruption via of_modalias overflow

Published Jun 19, 2024 · Updated Aug 5, 2026

Buffer overflow in of_modalias() in affected Linux kernel releases allows local users to corrupt memory through an undersized output buffer. The first snprintf() can make the remaining length negative and advance the destination pointer past the buffer; a later size check also omits the terminating NUL byte. Low-privilege local access is required, and successful exploitation exposes or alters kernel data or crashes the system.

CVSS severity7.8
High
EPSS probability0.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Buffer overflow in of_modalias() in affected Linux kernel releases allows local users to corrupt memory through an undersized output buffer. The first snprintf() can make the remaining length negative and advance the destination pointer past the buffer; a later size check also omits the terminating NUL byte. Low-privilege local access is required, and successful exploitation exposes or alters kernel data or crashes the system.

The record

CVE
CVE-2024-38541
Published
Jun 19, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-120, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 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=4.14
  2. Affected versionversion=bc575064d688c8933a6ca51429bea9bc63628d3b <0b0d5701a8bf02f8fee037e81aacf6746558bfd6
  3. Affected versionversion=bc575064d688c8933a6ca51429bea9bc63628d3b <46795440ef2b4ac919d09310a69a404c5bc90a88
  4. Affected versionversion=bc575064d688c8933a6ca51429bea9bc63628d3b <5d59fd637a8af42b211a92b2edb2474325b4d488
  5. Affected versionversion=bc575064d688c8933a6ca51429bea9bc63628d3b <733e62786bdf1b2b9dbb09ba2246313306503414
  6. Affected versionversion=bc575064d688c8933a6ca51429bea9bc63628d3b <c7f24b7d94549ff4623e8f41ea4d9f5319bd8ac8
  7. Affected versionversion=bc575064d688c8933a6ca51429bea9bc63628d3b <cf7385cb26ac4f0ee6c7385960525ad534323252
  8. Affected versionversion=bc575064d688c8933a6ca51429bea9bc63628d3b <e45b69360a63165377b30db4a1dfddd89ca18e9a
  9. Affected versionversion=bc575064d688c8933a6ca51429bea9bc63628d3b <ee332023adfd5882808f2dabf037b32d6ce36f9e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.14; version=bc575064d688c8933a6ca51429bea9bc63628d3b <0b0d5701a8bf02f8fee037e81aacf6746558bfd6; version=bc575064d688c8933a6ca51429bea9bc63628d3b <46795440ef2b4ac919d09310a69a404c5bc90a88; version=bc575064d688c8933a6ca51429bea9bc63628d3b <5d59fd637a8af42b211a92b2edb2474325b4d488; version=bc575064d688c8933a6ca51429bea9bc63628d3b <733e62786bdf1b2b9dbb09ba2246313306503414; version=bc575064d688c8933a6ca51429bea9bc63628d3b <c7f24b7d94549ff4623e8f41ea4d9f5319bd8ac8; version=bc575064d688c8933a6ca51429bea9bc63628d3b <cf7385cb26ac4f0ee6c7385960525ad534323252; version=bc575064d688c8933a6ca51429bea9bc63628d3b <e45b69360a63165377b30db4a1dfddd89ca18e9a; version=bc575064d688c8933a6ca51429bea9bc63628d3b <ee332023adfd5882808f2dabf037b32d6ce36f9e
The Linux Kernel Organization · Linux Kernelversion=4.14; version=bc575064d688 <0b0d5701a8bf; version=bc575064d688 <cf7385cb26ac; version=bc575064d688 <e45b69360a63; version=bc575064d688 <ee332023adfd

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.8kernel.orgCVSS: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 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

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1068Exploitation for Privilege Escalation

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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