CVE-2024-41063

Bluetooth teardown hang via workqueue self-deadlock

Published Jul 29, 2024 · Updated May 23, 2026

A deadlock in the Linux kernel Bluetooth HCI core allows local users to hang Bluetooth device teardown in affected kernels. hci_release_dev() can destroy and flush hdev->req_workqueue while hci_error_reset() is still executing on that same queue, causing self-deadlock. Low-privileged local access is required, and the documented consequence is an availability loss during Bluetooth device release rather than data access or modification.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A deadlock in the Linux kernel Bluetooth HCI core allows local users to hang Bluetooth device teardown in affected kernels. hci_release_dev() can destroy and flush hdev->req_workqueue while hci_error_reset() is still executing on that same queue, causing self-deadlock. Low-privileged local access is required, and the documented consequence is an availability loss during Bluetooth device release rather than data access or modification.

The record

CVE
CVE-2024-41063
Published
Jul 29, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 29, 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=2449007d3f73b2842c9734f45f0aadb522daf592 <0d151a103775dd9645c78c97f77d6e2a5298d913
  2. Affected versionversion=2449007d3f73b2842c9734f45f0aadb522daf592 <3f939bd73fed12dddc2a32a76116c19ca47c7678
  3. Affected versionversion=2ab9a19d896f5a0dd386e1f001c5309bc35f433b <d6cbce18370641a21dd889e8613d8153df15eb39
  4. Affected versionversion=4.19.309 <4.19.319
  5. Affected versionversion=45085686b9559bfbe3a4f41d3d695a520668f5e1 <96600c2e5ee8213dbab5df1617293d8e847bb4fa
  6. Affected versionversion=5.10.212 <5.10.223
  7. Affected versionversion=5.15.151 <5.15.164
  8. Affected versionversion=5.4.271 <5.4.281
  9. Affected versionversion=6.1.81 <6.1.101
  10. Affected versionversion=6.6.21 <6.6.42
  11. Affected versionversion=6.7.9 <6.8
  12. Affected versionversion=6.8
  13. Affected versionversion=6dd0a9dfa99f8990a08eb8fdd8e79bee31c7d8e2 <ddeda6ca5f218b668b560d90fc31ae469adbfd92
  14. Affected versionversion=98fb98fd37e42fd4ce13ff657ea64503e24b6090 <9cfc84b1d464cc024286f42a090718f9067b80ed
  15. Affected versionversion=da4569d450b193e39e87119fd316c0291b585d14 <d2ce562a5aff1dcd0c50d9808ea825ef90da909f
  16. Affected versionversion=dd594cdc24f2e48dab441732e6dfcafd6b0711d1
  17. Affected versionversion=e0b278650f07acf2e0932149183458468a731c03 <48542881997e17b49dc16b93fe910e0cfcf7a9f9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2449007d3f73b2842c9734f45f0aadb522daf592 <0d151a103775dd9645c78c97f77d6e2a5298d913; version=2449007d3f73b2842c9734f45f0aadb522daf592 <3f939bd73fed12dddc2a32a76116c19ca47c7678; version=2ab9a19d896f5a0dd386e1f001c5309bc35f433b <d6cbce18370641a21dd889e8613d8153df15eb39; version=4.19.309 <4.19.319; version=45085686b9559bfbe3a4f41d3d695a520668f5e1 <96600c2e5ee8213dbab5df1617293d8e847bb4fa; version=5.10.212 <5.10.223; version=5.15.151 <5.15.164; version=5.4.271 <5.4.281; version=6.1.81 <6.1.101; version=6.6.21 <6.6.42; version=6.7.9 <6.8; version=6.8; version=6dd0a9dfa99f8990a08eb8fdd8e79bee31c7d8e2 <ddeda6ca5f218b668b560d90fc31ae469adbfd92; version=98fb98fd37e42fd4ce13ff657ea64503e24b6090 <9cfc84b1d464cc024286f42a090718f9067b80ed; version=da4569d450b193e39e87119fd316c0291b585d14 <d2ce562a5aff1dcd0c50d9808ea825ef90da909f; version=dd594cdc24f2e48dab441732e6dfcafd6b0711d1; version=e0b278650f07acf2e0932149183458468a731c03 <48542881997e17b49dc16b93fe910e0cfcf7a9f9

Published CVSS scores

5.5NISTCVSS: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-667Improper Locking
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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