CVE-2025-68218 (GCVE-0-2025-68218)
Vulnerability from cvelistv5 – Published: 2025-12-16 13:57 – Updated: 2026-08-05 12:10
VLAI
EPSS
VEX
Title
nvme-multipath: fix lockdep WARN due to partition scan work
Summary
In the Linux kernel, the following vulnerability has been resolved:
nvme-multipath: fix lockdep WARN due to partition scan work
Blktests test cases nvme/014, 057 and 058 fail occasionally due to a
lockdep WARN. As reported in the Closes tag URL, the WARN indicates that
a deadlock can happen due to the dependency among disk->open_mutex,
kblockd workqueue completion and partition_scan_work completion.
To avoid the lockdep WARN and the potential deadlock, cut the dependency
by running the partition_scan_work not by kblockd workqueue but by
nvme_wq.
Severity
7.5 (High)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
60de2e03f984cfbcdc12fa552f95087c35a05a98 , < 89456dab7ba5ab63d60945440926673a3205e829
(git)
Affected: 4a57f42e5ed42cb8f1beb262c4f6d3e698939e4e , < e2a897ad5f538d314955c747a0a2edb184fcdecd (git) Affected: 1f021341eef41e77a633186e9be5223de2ce5d48 , < ef4ab2a8abe554379e10303ae86f7c501336ba0d (git) Affected: 1f021341eef41e77a633186e9be5223de2ce5d48 , < b03eb63288a8ffe3adfb34e68309c8e2edb06d0b (git) Affected: 1f021341eef41e77a633186e9be5223de2ce5d48 , < 6d87cd5335784351280f82c47cc8a657271929c3 (git) Affected: a91b7eddf45afeeb9c5ece11dddff5de0921b00f (git) Affected: 6.1.118 , < 6.1.159 (semver) Affected: 6.6.62 , < 6.6.118 (semver) Affected: 6.11.9 , < 6.12 (semver) |
guessed | |
| Linux | Linux |
Affected:
6.12
Unaffected: 0 , < 6.12 (semver) Unaffected: 6.1.159 , ≤ 6.1.* (semver) Unaffected: 6.6.118 , ≤ 6.6.* (semver) Unaffected: 6.12.60 , ≤ 6.12.* (semver) Unaffected: 6.17.10 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix) |
guessed |
{
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"programFiles": [
"drivers/nvme/host/multipath.c"
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
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"version": "6.12"
},
{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.1.159",
"versionType": "semver"
},
{
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"version": "6.6.118",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.12.60",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.10",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-multipath: fix lockdep WARN due to partition scan work\n\nBlktests test cases nvme/014, 057 and 058 fail occasionally due to a\nlockdep WARN. As reported in the Closes tag URL, the WARN indicates that\na deadlock can happen due to the dependency among disk-\u003eopen_mutex,\nkblockd workqueue completion and partition_scan_work completion.\n\nTo avoid the lockdep WARN and the potential deadlock, cut the dependency\nby running the partition_scan_work not by kblockd workqueue but by\nnvme_wq."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.5,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:N - A malicious NVMe/TCP, RDMA, or FC controller can remotely drive namespace discovery, rapid remapping, ANA changes, and removal through protocol responses and asynchronous events.\nAC:L - The controller controls namespace presentation and removal and can repeatedly trigger rapid lifecycle changes to overlap automated partition scanning and device closure.\nPR:N - Once the host is connected, an NVMe-oF peer needs no privileges on the vulnerable host; authentication is optional and unauthenticated NVMe/TCP deployments are supported.\nUI:N - Namespace scanning and systemd-udevd device opening and closure occur automatically in a configured persistent NVMe-oF deployment.\nS:U - The deadlock affects resources within the host kernel\u0027s existing security authority and does not cross a virtualization or isolation boundary.\nC:N - The defect creates a circular locking dependency without exposing memory or providing an information-disclosure primitive.\nI:N - No memory corruption, unauthorized write, or control-flow modification results from the workqueue deadlock.\nA:H - The circular dependency can deadlock NVMe and block-layer work and device teardown, hanging storage operations and potentially critical system services."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T12:10:17.092Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
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"url": "https://git.kernel.org/stable/c/89456dab7ba5ab63d60945440926673a3205e829"
},
{
"url": "https://git.kernel.org/stable/c/e2a897ad5f538d314955c747a0a2edb184fcdecd"
},
{
"url": "https://git.kernel.org/stable/c/ef4ab2a8abe554379e10303ae86f7c501336ba0d"
},
{
"url": "https://git.kernel.org/stable/c/b03eb63288a8ffe3adfb34e68309c8e2edb06d0b"
},
{
"url": "https://git.kernel.org/stable/c/6d87cd5335784351280f82c47cc8a657271929c3"
}
],
"title": "nvme-multipath: fix lockdep WARN due to partition scan work",
"x_generator": {
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"cveId": "CVE-2025-68218",
"datePublished": "2025-12-16T13:57:12.733Z",
"dateReserved": "2025-12-16T13:41:40.256Z",
"dateUpdated": "2026-08-05T12:10:17.092Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
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"cve": "CVE-2025-68218",
"date": "2026-10-01",
"epss": "0.00528",
"percentile": "0.42577"
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],
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-multipath: fix lockdep WARN due to partition scan work\n\nBlktests test cases nvme/014, 057 and 058 fail occasionally due to a\nlockdep WARN. As reported in the Closes tag URL, the WARN indicates that\na deadlock can happen due to the dependency among disk-\u003eopen_mutex,\nkblockd workqueue completion and partition_scan_work completion.\n\nTo avoid the lockdep WARN and the potential deadlock, cut the dependency\nby running the partition_scan_work not by kblockd workqueue but by\nnvme_wq."
}
],
"id": "CVE-2025-68218",
"lastModified": "2026-07-30T06:24:33.807",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
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"impactScore": 3.6,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
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},
"published": "2025-12-16T14:15:54.897",
"references": [
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],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Deferred"
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},
"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2026-07-30T10:07:13+00:00",
"cve": "CVE-2025-68218",
"id": "CVE-2025-68218",
"initial_release_date": "2025-12-16T00:00:00+00:00",
"product_status:known_affected": "184",
"product_status:known_not_affected": "90",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: Linux kernel: Denial of Service in nvme-multipath due to deadlock",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68218.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-24T16:37:49Z",
"cve": "CVE-2025-68218",
"id": "CVE-2025-68218",
"initial_release_date": "2025-12-17T00:25:11Z",
"product_status:first_fixed": "2",
"product_status:known_not_affected": "368",
"product_status:recommended": "451",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2025-68218",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-68218.json",
"version": "35"
}
}
}
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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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