CVE-2026-64408 (GCVE-0-2026-64408)
Vulnerability from cvelistv5 – Published: 2026-07-25 08:50 – Updated: 2026-08-17 04:55
VLAI
EPSS
VEX
Title
Bluetooth: bnep: pin L2CAP connection during netdev registration
Summary
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: bnep: pin L2CAP connection during netdev registration
bnep_add_connection() reads the L2CAP connection without holding the
channel lock, then passes its HCI device to register_netdev(). Controller
teardown can clear and release that connection concurrently, leaving the
network device registration path to dereference a freed parent device.
Take a reference to the L2CAP connection while holding the channel lock.
Retain it until register_netdev() has taken the parent device reference.
Severity
8.8 (High)
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
65f53e9802dbfae0e5758a91793c3f5f8bece49b , < 390b5db3ff8745187f094c4e915663b7b1f98944
(git)
Affected: 65f53e9802dbfae0e5758a91793c3f5f8bece49b , < 46a88784c4c9b96954dd86f747ce93f65efa1302 (git) Affected: 65f53e9802dbfae0e5758a91793c3f5f8bece49b , < 551ae773ec64045b4e72099132654887e0270bcc (git) Affected: 65f53e9802dbfae0e5758a91793c3f5f8bece49b , < ae215c5b6422d8eda443b861b124bd1be6969c31 (git) Affected: 65f53e9802dbfae0e5758a91793c3f5f8bece49b , < df22adc7eafc22e651561813c11dc51a796b12ee (git) Affected: 65f53e9802dbfae0e5758a91793c3f5f8bece49b , < a6b22dbd80926556290ad2243be25218d6956a19 (git) Affected: 65f53e9802dbfae0e5758a91793c3f5f8bece49b , < 563a8573047182f550b1e1e030615755cd8c41da (git) Affected: 65f53e9802dbfae0e5758a91793c3f5f8bece49b , < bb067a99a0356196c0b89a95721985485ebce5a5 (git) |
guessed | |
| Linux | Linux |
Affected:
3.13
Unaffected: 0 , < 3.13 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.96 , ≤ 6.12.* (semver) Unaffected: 6.18.39 , ≤ 6.18.* (semver) Unaffected: 7.1.4 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix) |
guessed |
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"Patch"
],
"url": "https://git.kernel.org/stable/c/bb067a99a0356196c0b89a95721985485ebce5a5"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/df22adc7eafc22e651561813c11dc51a796b12ee"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-07-30T08:28:42+00:00",
"cve": "CVE-2026-64408",
"id": "CVE-2026-64408",
"initial_release_date": "2026-07-25T00:00:00+00:00",
"product_status:known_affected": "246",
"product_status:known_not_affected": "28",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: Bluetooth: bnep: pin L2CAP connection during netdev registration",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64408.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-23T00:22:21Z",
"cve": "CVE-2026-64408",
"id": "CVE-2026-64408",
"initial_release_date": "2026-07-25T15:59:54Z",
"product_status:first_fixed": "68",
"product_status:known_affected": "621",
"product_status:known_not_affected": "58",
"product_status:recommended": "134",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-64408",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64408.json",
"version": "13"
}
}
}
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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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