CVE-2024-42137

Bluetooth service loss via omitted controller reset

Published Jul 30, 2024 · Updated May 23, 2026

Denial of service in the Linux QCA Bluetooth driver allows local users to disable QCA6390 Bluetooth after a warm reboot. The qca_serdev_shutdown() path skips the vendor-specific controller reset because its closed-serdev guard suppresses the required flush and write operations. Triggering the failure requires QCA6390 hardware without an enable-gpios DT or ACPI property and the sequence enable, disable, then warm reboot; the resulting interruption is limited to Bluetooth service.

CVSS severity5.5
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux QCA Bluetooth driver allows local users to disable QCA6390 Bluetooth after a warm reboot. The qca_serdev_shutdown() path skips the vendor-specific controller reset because its closed-serdev guard suppresses the required flush and write operations. Triggering the failure requires QCA6390 hardware without an enable-gpios DT or ACPI property and the sequence enable, disable, then warm reboot; the resulting interruption is limited to Bluetooth service.

The record

CVE
CVE-2024-42137
Published
Jul 30, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1489
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 30, 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

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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=272970be3dabd24cbe50e393ffee8f04aec3b9a8 <88e72239ead9814b886db54fc4ee39ef3c2b8f26
  2. Affected versionversion=272970be3dabd24cbe50e393ffee8f04aec3b9a8 <977b9dc65e14fb80de4763d949c7dec2ecb15b9b
  3. Affected versionversion=272970be3dabd24cbe50e393ffee8f04aec3b9a8 <e2d8aa4c763593704ac21e7591aed4f13e32f3b5
  4. Affected versionversion=5.10.165 <5.10.222
  5. Affected versionversion=5.15.90 <5.15.163
  6. Affected versionversion=6.1.8 <6.1.98
  7. Affected versionversion=6.2
  8. Affected versionversion=908d1742b6e694e84ead5c62e4b7c1bfbb8b46a3 <4ca6013cd18e58ac1044908c40d4006a92093a11
  9. Affected versionversion=e84ec6e25df9bb0968599e92eacedaf3a0a5b587 <215a26c2404fa34625c725d446967fa328a703eb
  10. Affected versionversion=ea3ebda47dd56f6e1c62f2e0e1b6e1b0a973e447 <e6e200b264271f62a3fadb51ada9423015ece37b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=272970be3dabd24cbe50e393ffee8f04aec3b9a8 <88e72239ead9814b886db54fc4ee39ef3c2b8f26; version=272970be3dabd24cbe50e393ffee8f04aec3b9a8 <977b9dc65e14fb80de4763d949c7dec2ecb15b9b; version=272970be3dabd24cbe50e393ffee8f04aec3b9a8 <e2d8aa4c763593704ac21e7591aed4f13e32f3b5; version=5.10.165 <5.10.222; version=5.15.90 <5.15.163; version=6.1.8 <6.1.98; version=6.2; version=908d1742b6e694e84ead5c62e4b7c1bfbb8b46a3 <4ca6013cd18e58ac1044908c40d4006a92093a11; version=e84ec6e25df9bb0968599e92eacedaf3a0a5b587 <215a26c2404fa34625c725d446967fa328a703eb; version=ea3ebda47dd56f6e1c62f2e0e1b6e1b0a973e447 <e6e200b264271f62a3fadb51ada9423015ece37b

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.

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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

T1489Service Stop

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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