CVE-2024-24860

System crash via unlocked Bluetooth key-size validation

Published Feb 5, 2024 · Updated Feb 13, 2025

Race condition in Linux Kernel 5.6-rc1 through 6.7.2 allows local users to cause a system crash through Bluetooth debugfs. The min_key_size_set and max_key_size_set functions validate against the paired limit before acquiring hci_dev_lock, so concurrent writes can store a maximum below the minimum. The setters require privileged local debugfs access, and the reported null-pointer dereference can panic the kernel; upstream runtime triggering was not tested.

CVSS severity4.6
Medium
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in Linux Kernel 5.6-rc1 through 6.7.2 allows local users to cause a system crash through Bluetooth debugfs. The min_key_size_set and max_key_size_set functions validate against the paired limit before acquiring hci_dev_lock, so concurrent writes can store a maximum below the minimum. The setters require privileged local debugfs access, and the reported null-pointer dereference can panic the kernel; upstream runtime triggering was not tested.

The record

CVE
CVE-2024-24860
Published
Feb 5, 2024
Updated
Feb 13, 2025
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, CWE-362, CAPEC-26, T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 5, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record 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=v5.6-rc1 <v6.8-rc1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linux Kernelversion=v5.6-rc1 <v6.8-rc1

Published CVSS scores

5.3NISTCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
4.6OpenAnolisCVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CAPEC-26Leveraging Race Conditions
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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