CVE-2024-26888

Kernel memory exhaustion via leaked Bluetooth command buffers

Published Apr 17, 2024 · Updated May 23, 2026

Memory leak in the Linux kernel Bluetooth Microsoft extension allows local users to consume kernel memory through monitor requests. The MSFT extension allocates a command buffer for MSFT_OP_LE_MONITOR_ADVERTISEMENT but fails to release it after sending the command. Reaching the flaw requires local low-privileged access and the Microsoft Bluetooth monitor-advertisement path; repeated operations can interrupt service by exhausting kernel memory.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in the Linux kernel Bluetooth Microsoft extension allows local users to consume kernel memory through monitor requests. The MSFT extension allocates a command buffer for MSFT_OP_LE_MONITOR_ADVERTISEMENT but fails to release it after sending the command. Reaching the flaw requires local low-privileged access and the Microsoft Bluetooth monitor-advertisement path; repeated operations can interrupt service by exhausting kernel memory.

The record

CVE
CVE-2024-26888
Published
Apr 17, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 17, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.4.16 <6.5
  2. Affected versionversion=6.5.3 <6.6
  3. Affected versionversion=6.6
  4. Affected versionversion=80fe27811c56ecd3896c3d511ab8298146071d98
  5. Affected versionversion=9e14606d8f38ea52a38c27692a9c1513c987a5da <5987b9f7d9314c7411136005b3a52f61a8cc0911
  6. Affected versionversion=9e14606d8f38ea52a38c27692a9c1513c987a5da <5cb93417c93716a5404f762f331f5de3653fd952
  7. Affected versionversion=9e14606d8f38ea52a38c27692a9c1513c987a5da <98e9920c75e0790bff947a00d192d24bf1c724e0
  8. Affected versionversion=9e14606d8f38ea52a38c27692a9c1513c987a5da <a6e06258f4c31eba0fcd503e19828b5f8fe7b08b
  9. Affected versionversion=f9965f7f38c90449a5fb26edb8a7d22b1dcf0283

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.4.16 <6.5; version=6.5.3 <6.6; version=6.6; version=80fe27811c56ecd3896c3d511ab8298146071d98; version=9e14606d8f38ea52a38c27692a9c1513c987a5da <5987b9f7d9314c7411136005b3a52f61a8cc0911; version=9e14606d8f38ea52a38c27692a9c1513c987a5da <5cb93417c93716a5404f762f331f5de3653fd952; version=9e14606d8f38ea52a38c27692a9c1513c987a5da <98e9920c75e0790bff947a00d192d24bf1c724e0; version=9e14606d8f38ea52a38c27692a9c1513c987a5da <a6e06258f4c31eba0fcd503e19828b5f8fe7b08b; version=f9965f7f38c90449a5fb26edb8a7d22b1dcf0283

Published CVSS scores

5.5NIST NVDCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-401Missing Release of Memory after Effective Lifetime
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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