CVE-2024-39487

Kernel-memory disclosure and crash via empty ARP target

Published Jul 9, 2024 · Updated Aug 5, 2026

Out-of-bounds read in the Linux bonding driver allows local users to disclose kernel memory or crash the operating system. bond_option_arp_ip_targets_set() advances past an empty arp_ip_target string and passes the resulting out-of-bounds pointer to the IPv4 parser, whose strlen() reads adjacent memory. A low-privilege user can create a bond device inside user and network namespaces and trigger the flaw without root access or user interaction.

CVSS severity7.1
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

Out-of-bounds read in the Linux bonding driver allows local users to disclose kernel memory or crash the operating system. bond_option_arp_ip_targets_set() advances past an empty arp_ip_target string and passes the resulting out-of-bounds pointer to the IPv4 parser, whose strlen() reads adjacent memory. A low-privilege user can create a bond device inside user and network namespaces and trigger the flaw without root access or user interaction.

The record

CVE
CVE-2024-39487
Published
Jul 9, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 9, 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=3.13
  2. Affected versionversion=f9de11a165943a55e0fbda714caf60eaeb276a42 <6a8a4fd082c439e19fede027e80c79bc4c84bb8e
  3. Affected versionversion=f9de11a165943a55e0fbda714caf60eaeb276a42 <6b21346b399fd1336fe59233a17eb5ce73041ee1
  4. Affected versionversion=f9de11a165943a55e0fbda714caf60eaeb276a42 <707c85ba3527ad6aa25552033576b0f1ff835d7b
  5. Affected versionversion=f9de11a165943a55e0fbda714caf60eaeb276a42 <9f835e48bd4c75fdf6a9cff3f0b806a7abde78da
  6. Affected versionversion=f9de11a165943a55e0fbda714caf60eaeb276a42 <b75e33eae8667084bd4a63e67657c6a5a0f8d1e8
  7. Affected versionversion=f9de11a165943a55e0fbda714caf60eaeb276a42 <bfd14e5915c2669f292a31d028e75dcd82f1e7e9
  8. Affected versionversion=f9de11a165943a55e0fbda714caf60eaeb276a42 <c8eb8ab9a44ff0e73492d0a12a643c449f641a9f
  9. Affected versionversion=f9de11a165943a55e0fbda714caf60eaeb276a42 <e271ff53807e8f2c628758290f0e499dbe51cb3d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.13; version=f9de11a165943a55e0fbda714caf60eaeb276a42 <6a8a4fd082c439e19fede027e80c79bc4c84bb8e; version=f9de11a165943a55e0fbda714caf60eaeb276a42 <6b21346b399fd1336fe59233a17eb5ce73041ee1; version=f9de11a165943a55e0fbda714caf60eaeb276a42 <707c85ba3527ad6aa25552033576b0f1ff835d7b; version=f9de11a165943a55e0fbda714caf60eaeb276a42 <9f835e48bd4c75fdf6a9cff3f0b806a7abde78da; version=f9de11a165943a55e0fbda714caf60eaeb276a42 <b75e33eae8667084bd4a63e67657c6a5a0f8d1e8; version=f9de11a165943a55e0fbda714caf60eaeb276a42 <bfd14e5915c2669f292a31d028e75dcd82f1e7e9; version=f9de11a165943a55e0fbda714caf60eaeb276a42 <c8eb8ab9a44ff0e73492d0a12a643c449f641a9f; version=f9de11a165943a55e0fbda714caf60eaeb276a42 <e271ff53807e8f2c628758290f0e499dbe51cb3d

Published CVSS scores

7.1Linux CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
5.5Oracle LinuxCVSS: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

CWE-125Out-of-bounds Read
T1499Endpoint Denial of Service

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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