CVE-2024-26886 (GCVE-0-2024-26886)
Vulnerability from cvelistv5 – Published: 2024-04-17 10:27 – Updated: 2026-06-01 16:04
VLAI
EPSS
VEX
Title
Bluetooth: af_bluetooth: Fix deadlock
Summary
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: af_bluetooth: Fix deadlock
Attemting to do sock_lock on .recvmsg may cause a deadlock as shown
bellow, so instead of using sock_sock this uses sk_receive_queue.lock
on bt_sock_ioctl to avoid the UAF:
INFO: task kworker/u9:1:121 blocked for more than 30 seconds.
Not tainted 6.7.6-lemon #183
Workqueue: hci0 hci_rx_work
Call Trace:
<TASK>
__schedule+0x37d/0xa00
schedule+0x32/0xe0
__lock_sock+0x68/0xa0
? __pfx_autoremove_wake_function+0x10/0x10
lock_sock_nested+0x43/0x50
l2cap_sock_recv_cb+0x21/0xa0
l2cap_recv_frame+0x55b/0x30a0
? psi_task_switch+0xeb/0x270
? finish_task_switch.isra.0+0x93/0x2a0
hci_rx_work+0x33a/0x3f0
process_one_work+0x13a/0x2f0
worker_thread+0x2f0/0x410
? __pfx_worker_thread+0x10/0x10
kthread+0xe0/0x110
? __pfx_kthread+0x10/0x10
ret_from_fork+0x2c/0x50
? __pfx_kthread+0x10/0x10
ret_from_fork_asm+0x1b/0x30
</TASK>
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-17 17:41 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
6 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
2b16d960c79abc397f102c3d23d30005b68cb036 , < 60673f442984fe689d4127a5dd4be414247b3d67
(git)
Affected: 1d576c3a5af850bf11fbd103f9ba11aa6d6061fb , < 64be3c6154886200708da0dfe259705fb992416c (git) Affected: 2e07e8348ea454615e268222ae3fc240421be768 , < 817e8138ce86001b2fa5c63d6ede756e205a01f7 (git) Affected: 2e07e8348ea454615e268222ae3fc240421be768 , < 2c9e2df022ef8b9d7fac58a04a2ef4ed25288955 (git) Affected: 2e07e8348ea454615e268222ae3fc240421be768 , < f7b94bdc1ec107c92262716b073b3e816d4784fb (git) Affected: db1b14eec8c61a20374de9f9c2ddc6c9406a8c42 (git) Affected: 37f71e2c9f515834841826f4eb68ec33cfb2a1ff (git) Affected: 5.15.146 , < 5.15.209 (semver) Affected: 6.6.9 , < 6.6.23 (semver) Affected: 5.10.206 , < 5.11 (semver) Affected: 6.1.70 , < 6.2 (semver) |
guessed | |
| Linux | Linux |
Affected:
6.7
Unaffected: 0 , < 6.7 (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.6.23 , ≤ 6.6.* (semver) Unaffected: 6.7.11 , ≤ 6.7.* (semver) Unaffected: 6.8.2 , ≤ 6.8.* (semver) Unaffected: 6.9 , ≤ * (original_commit_for_fix) |
guessed |
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},
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}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
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],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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]
}
},
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"current_release_date": "2026-01-22T15:43:19+00:00",
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"id": "CVE-2024-26886",
"initial_release_date": "2024-04-17T00:00:00+00:00",
"product_status:fixed": "1295",
"product_status:known_affected": "70",
"product_status:known_not_affected": "109",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: Bluetooth: af_bluetooth: Fix deadlock",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-26886.json",
"version": "3"
},
"vulnrichment": {
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"title": "CVE Program Container"
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"title": "CISA ADP Vulnrichment"
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"cveId": "CVE-2024-26886",
"datePublished": "2024-04-17T10:27:40.941Z",
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"state": "PUBLISHED"
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}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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