CVE-2025-21937 (GCVE-0-2025-21937)
Vulnerability from cvelistv5 – Published: 2025-04-01 15:41 – Updated: 2026-05-23 15:57
VLAI
EPSS
VEX
Title
Bluetooth: Add check for mgmt_alloc_skb() in mgmt_remote_name()
Summary
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: Add check for mgmt_alloc_skb() in mgmt_remote_name()
Add check for the return value of mgmt_alloc_skb() in
mgmt_remote_name() to prevent null pointer dereference.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:22 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
6 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
ba17bb62ce415950753c19d16bb43b2bd3701158 , < 37785a01040cb5d11ed0ddbcbf78491fcd073161
(git)
Affected: ba17bb62ce415950753c19d16bb43b2bd3701158 , < c5845c73cbacf5704169283ef29ca02031a36564 (git) Affected: ba17bb62ce415950753c19d16bb43b2bd3701158 , < 88310caff68ae69d0574859f7926a59c1da2d60b (git) Affected: ba17bb62ce415950753c19d16bb43b2bd3701158 , < 69fb168b88e4d62cb31cdd725b67ccc5216cfcaf (git) Affected: ba17bb62ce415950753c19d16bb43b2bd3701158 , < f2176a07e7b19f73e05c805cf3d130a2999154cb (git) Affected: 0f526a6d3e9347d94c2c0b5292a3cb3b25115019 (git) Affected: 5.17.2 , < 5.18 (semver) |
guessed | |
| Linux | Linux |
Affected:
5.18
Unaffected: 0 , < 5.18 (semver) Unaffected: 6.1.131 , ≤ 6.1.* (semver) Unaffected: 6.6.83 , ≤ 6.6.* (semver) Unaffected: 6.12.19 , ≤ 6.12.* (semver) Unaffected: 6.13.7 , ≤ 6.13.* (semver) Unaffected: 6.14 , ≤ * (original_commit_for_fix) |
guessed |
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}
},
{
"other": {
"content": {
"id": "CVE-2025-21937",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-10-01T19:22:11.013258Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-476",
"description": "CWE-476 NULL Pointer Dereference",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-10-01T14:38:02.700Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/bluetooth/mgmt.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "37785a01040cb5d11ed0ddbcbf78491fcd073161",
"status": "affected",
"version": "ba17bb62ce415950753c19d16bb43b2bd3701158",
"versionType": "git"
},
{
"lessThan": "c5845c73cbacf5704169283ef29ca02031a36564",
"status": "affected",
"version": "ba17bb62ce415950753c19d16bb43b2bd3701158",
"versionType": "git"
},
{
"lessThan": "88310caff68ae69d0574859f7926a59c1da2d60b",
"status": "affected",
"version": "ba17bb62ce415950753c19d16bb43b2bd3701158",
"versionType": "git"
},
{
"lessThan": "69fb168b88e4d62cb31cdd725b67ccc5216cfcaf",
"status": "affected",
"version": "ba17bb62ce415950753c19d16bb43b2bd3701158",
"versionType": "git"
},
{
"lessThan": "f2176a07e7b19f73e05c805cf3d130a2999154cb",
"status": "affected",
"version": "ba17bb62ce415950753c19d16bb43b2bd3701158",
"versionType": "git"
},
{
"status": "affected",
"version": "0f526a6d3e9347d94c2c0b5292a3cb3b25115019",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/bluetooth/mgmt.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.18"
},
{
"lessThan": "5.18",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.131",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.83",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.19",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.13.*",
"status": "unaffected",
"version": "6.13.7",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.14",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.131",
"versionStartIncluding": "5.18",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.83",
"versionStartIncluding": "5.18",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.19",
"versionStartIncluding": "5.18",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.13.7",
"versionStartIncluding": "5.18",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.14",
"versionStartIncluding": "5.18",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.17.2",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: Add check for mgmt_alloc_skb() in mgmt_remote_name()\n\nAdd check for the return value of mgmt_alloc_skb() in\nmgmt_remote_name() to prevent null pointer dereference."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T21:09:25.440Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/37785a01040cb5d11ed0ddbcbf78491fcd073161"
},
{
"url": "https://git.kernel.org/stable/c/c5845c73cbacf5704169283ef29ca02031a36564"
},
{
"url": "https://git.kernel.org/stable/c/88310caff68ae69d0574859f7926a59c1da2d60b"
},
{
"url": "https://git.kernel.org/stable/c/69fb168b88e4d62cb31cdd725b67ccc5216cfcaf"
},
{
"url": "https://git.kernel.org/stable/c/f2176a07e7b19f73e05c805cf3d130a2999154cb"
}
],
"title": "Bluetooth: Add check for mgmt_alloc_skb() in mgmt_remote_name()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-21937",
"datePublished": "2025-04-01T15:41:04.378Z",
"dateReserved": "2024-12-29T08:45:45.789Z",
"dateUpdated": "2026-05-11T21:09:25.440Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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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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