CVE-2025-68374 (GCVE-0-2025-68374)
Vulnerability from cvelistv5 – Published: 2025-12-24 10:33 – Updated: 2026-05-11 21:51
VLAI
EPSS
VEX
Title
md: fix rcu protection in md_wakeup_thread
Summary
In the Linux kernel, the following vulnerability has been resolved:
md: fix rcu protection in md_wakeup_thread
We attempted to use RCU to protect the pointer 'thread', but directly
passed the value when calling md_wakeup_thread(). This means that the
RCU pointer has been acquired before rcu_read_lock(), which renders
rcu_read_lock() ineffective and could lead to a use-after-free.
Severity
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
4469315439827290923fce4f3f672599cabeb366 , < 21989cb5034c835b212385a2afadf279d8069da0
(git)
Affected: 4469315439827290923fce4f3f672599cabeb366 , < a4bd1caf591faeae44cb10b6517e7dacb5139bda (git) Affected: 4469315439827290923fce4f3f672599cabeb366 , < f98b191f78124405294481dea85f8a22a3eb0a59 (git) Affected: 4469315439827290923fce4f3f672599cabeb366 , < 0dc76205549b4c25705e54345f211b9f66e018a0 (git) |
guessed | |
| Linux | Linux |
Affected:
6.5
Unaffected: 0 , < 6.5 (semver) Unaffected: 6.12.63 , ≤ 6.12.* (semver) Unaffected: 6.17.13 , ≤ 6.17.* (semver) Unaffected: 6.18.2 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/md/md.c",
"drivers/md/md.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "21989cb5034c835b212385a2afadf279d8069da0",
"status": "affected",
"version": "4469315439827290923fce4f3f672599cabeb366",
"versionType": "git"
},
{
"lessThan": "a4bd1caf591faeae44cb10b6517e7dacb5139bda",
"status": "affected",
"version": "4469315439827290923fce4f3f672599cabeb366",
"versionType": "git"
},
{
"lessThan": "f98b191f78124405294481dea85f8a22a3eb0a59",
"status": "affected",
"version": "4469315439827290923fce4f3f672599cabeb366",
"versionType": "git"
},
{
"lessThan": "0dc76205549b4c25705e54345f211b9f66e018a0",
"status": "affected",
"version": "4469315439827290923fce4f3f672599cabeb366",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/md/md.c",
"drivers/md/md.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.5"
},
{
"lessThan": "6.5",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.63",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.13",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.63",
"versionStartIncluding": "6.5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17.13",
"versionStartIncluding": "6.5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.2",
"versionStartIncluding": "6.5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.19",
"versionStartIncluding": "6.5",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd: fix rcu protection in md_wakeup_thread\n\nWe attempted to use RCU to protect the pointer \u0027thread\u0027, but directly\npassed the value when calling md_wakeup_thread(). This means that the\nRCU pointer has been acquired before rcu_read_lock(), which renders\nrcu_read_lock() ineffective and could lead to a use-after-free."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T21:51:58.372Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/21989cb5034c835b212385a2afadf279d8069da0"
},
{
"url": "https://git.kernel.org/stable/c/a4bd1caf591faeae44cb10b6517e7dacb5139bda"
},
{
"url": "https://git.kernel.org/stable/c/f98b191f78124405294481dea85f8a22a3eb0a59"
},
{
"url": "https://git.kernel.org/stable/c/0dc76205549b4c25705e54345f211b9f66e018a0"
}
],
"title": "md: fix rcu protection in md_wakeup_thread",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-68374",
"datePublished": "2025-12-24T10:33:04.046Z",
"dateReserved": "2025-12-16T14:48:05.310Z",
"dateUpdated": "2026-05-11T21:51:58.372Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2025-68374",
"date": "2026-09-21",
"epss": "0.00196",
"percentile": "0.09637"
},
"microsoft_vex": {
"current_release_date": "2026-09-20T01:51:07.000Z",
"cve": "CVE-2025-68374",
"id": "msrc_CVE-2025-68374",
"initial_release_date": "2025-12-25T01:05:56.000Z",
"product_status:known_affected": "15",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "md: fix rcu protection in md_wakeup_thread",
"url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-68374.json",
"version": "17"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/md/md.c",
"drivers/md/md.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "21989cb5034c835b212385a2afadf279d8069da0",
"status": "affected",
"version": "4469315439827290923fce4f3f672599cabeb366",
"versionType": "git"
},
{
"lessThan": "a4bd1caf591faeae44cb10b6517e7dacb5139bda",
"status": "affected",
"version": "4469315439827290923fce4f3f672599cabeb366",
"versionType": "git"
},
{
"lessThan": "f98b191f78124405294481dea85f8a22a3eb0a59",
"status": "affected",
"version": "4469315439827290923fce4f3f672599cabeb366",
"versionType": "git"
},
{
"lessThan": "0dc76205549b4c25705e54345f211b9f66e018a0",
"status": "affected",
"version": "4469315439827290923fce4f3f672599cabeb366",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/md/md.c",
"drivers/md/md.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.5"
},
{
"lessThan": "6.5",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.63",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.13",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd: fix rcu protection in md_wakeup_thread\n\nWe attempted to use RCU to protect the pointer \u0027thread\u0027, but directly\npassed the value when calling md_wakeup_thread(). This means that the\nRCU pointer has been acquired before rcu_read_lock(), which renders\nrcu_read_lock() ineffective and could lead to a use-after-free."
}
],
"id": "CVE-2025-68374",
"lastModified": "2026-06-17T09:59:01.400",
"metrics": {},
"published": "2025-12-24T11:16:00.993",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/0dc76205549b4c25705e54345f211b9f66e018a0"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/21989cb5034c835b212385a2afadf279d8069da0"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/a4bd1caf591faeae44cb10b6517e7dacb5139bda"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/f98b191f78124405294481dea85f8a22a3eb0a59"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Deferred"
}
},
"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2026-06-30T10:37:19+00:00",
"cve": "CVE-2025-68374",
"id": "CVE-2025-68374",
"initial_release_date": "2025-12-24T00:00:00+00:00",
"product_status:known_affected": "198",
"product_status:known_not_affected": "76",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: md: fix rcu protection in md_wakeup_thread",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68374.json",
"version": "3"
}
}
}
Loading…
Loading…
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.
Loading…
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.
Loading…
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.
Loading…