CVE-2025-39805 (GCVE-0-2025-39805)
Vulnerability from cvelistv5 – Published: 2025-09-16 13:00 – Updated: 2026-05-11 21:36
VLAI
EPSS
VEX
Title
net: macb: fix unregister_netdev call order in macb_remove()
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: macb: fix unregister_netdev call order in macb_remove()
When removing a macb device, the driver calls phy_exit() before
unregister_netdev(). This leads to a WARN from kernfs:
------------[ cut here ]------------
kernfs: can not remove 'attached_dev', no directory
WARNING: CPU: 1 PID: 27146 at fs/kernfs/dir.c:1683
Call trace:
kernfs_remove_by_name_ns+0xd8/0xf0
sysfs_remove_link+0x24/0x58
phy_detach+0x5c/0x168
phy_disconnect+0x4c/0x70
phylink_disconnect_phy+0x6c/0xc0 [phylink]
macb_close+0x6c/0x170 [macb]
...
macb_remove+0x60/0x168 [macb]
platform_remove+0x5c/0x80
...
The warning happens because the PHY is being exited while the netdev
is still registered. The correct order is to unregister the netdev
before shutting down the PHY and cleaning up the MDIO bus.
Fix this by moving unregister_netdev() ahead of phy_exit() in
macb_remove().
Severity
5.5 (Medium)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
8b73fa3ae02b2401960de41b0454c0321377b203 , < 7351782f2fc8ac31ced52e3d4e6fa120f819a7ab
(git)
Affected: 8b73fa3ae02b2401960de41b0454c0321377b203 , < 2b9719ccad38dffad7dbdd2f39896f723f9b9011 (git) Affected: 8b73fa3ae02b2401960de41b0454c0321377b203 , < ff0d3bad32108b57265e5b48f15327549af771d3 (git) Affected: 8b73fa3ae02b2401960de41b0454c0321377b203 , < 775fe690fd4a3337ad2115de2adb41b227d4dae7 (git) Affected: 8b73fa3ae02b2401960de41b0454c0321377b203 , < 01b9128c5db1b470575d07b05b67ffa3cb02ebf1 (git) |
guessed | |
| Linux | Linux |
Affected:
5.18
Unaffected: 0 , < 5.18 (semver) Unaffected: 6.1.159 , ≤ 6.1.* (semver) Unaffected: 6.6.119 , ≤ 6.6.* (semver) Unaffected: 6.12.45 , ≤ 6.12.* (semver) Unaffected: 6.16.5 , ≤ 6.16.* (semver) Unaffected: 6.17 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/ethernet/cadence/macb_main.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "7351782f2fc8ac31ced52e3d4e6fa120f819a7ab",
"status": "affected",
"version": "8b73fa3ae02b2401960de41b0454c0321377b203",
"versionType": "git"
},
{
"lessThan": "2b9719ccad38dffad7dbdd2f39896f723f9b9011",
"status": "affected",
"version": "8b73fa3ae02b2401960de41b0454c0321377b203",
"versionType": "git"
},
{
"lessThan": "ff0d3bad32108b57265e5b48f15327549af771d3",
"status": "affected",
"version": "8b73fa3ae02b2401960de41b0454c0321377b203",
"versionType": "git"
},
{
"lessThan": "775fe690fd4a3337ad2115de2adb41b227d4dae7",
"status": "affected",
"version": "8b73fa3ae02b2401960de41b0454c0321377b203",
"versionType": "git"
},
{
"lessThan": "01b9128c5db1b470575d07b05b67ffa3cb02ebf1",
"status": "affected",
"version": "8b73fa3ae02b2401960de41b0454c0321377b203",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/net/ethernet/cadence/macb_main.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": "6.1.159",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.119",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.45",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.16.*",
"status": "unaffected",
"version": "6.16.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.17",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.159",
"versionStartIncluding": "5.18",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.119",
"versionStartIncluding": "5.18",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.45",
"versionStartIncluding": "5.18",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.16.5",
"versionStartIncluding": "5.18",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17",
"versionStartIncluding": "5.18",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: macb: fix unregister_netdev call order in macb_remove()\n\nWhen removing a macb device, the driver calls phy_exit() before\nunregister_netdev(). This leads to a WARN from kernfs:\n\n ------------[ cut here ]------------\n kernfs: can not remove \u0027attached_dev\u0027, no directory\n WARNING: CPU: 1 PID: 27146 at fs/kernfs/dir.c:1683\n Call trace:\n kernfs_remove_by_name_ns+0xd8/0xf0\n sysfs_remove_link+0x24/0x58\n phy_detach+0x5c/0x168\n phy_disconnect+0x4c/0x70\n phylink_disconnect_phy+0x6c/0xc0 [phylink]\n macb_close+0x6c/0x170 [macb]\n ...\n macb_remove+0x60/0x168 [macb]\n platform_remove+0x5c/0x80\n ...\n\nThe warning happens because the PHY is being exited while the netdev\nis still registered. The correct order is to unregister the netdev\nbefore shutting down the PHY and cleaning up the MDIO bus.\n\nFix this by moving unregister_netdev() ahead of phy_exit() in\nmacb_remove()."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T21:36:36.596Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/7351782f2fc8ac31ced52e3d4e6fa120f819a7ab"
},
{
"url": "https://git.kernel.org/stable/c/2b9719ccad38dffad7dbdd2f39896f723f9b9011"
},
{
"url": "https://git.kernel.org/stable/c/ff0d3bad32108b57265e5b48f15327549af771d3"
},
{
"url": "https://git.kernel.org/stable/c/775fe690fd4a3337ad2115de2adb41b227d4dae7"
},
{
"url": "https://git.kernel.org/stable/c/01b9128c5db1b470575d07b05b67ffa3cb02ebf1"
}
],
"title": "net: macb: fix unregister_netdev call order in macb_remove()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-39805",
"datePublished": "2025-09-16T13:00:06.731Z",
"dateReserved": "2025-04-16T07:20:57.136Z",
"dateUpdated": "2026-05-11T21:36:36.596Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2025-39805",
"date": "2026-09-18",
"epss": "0.00157",
"percentile": "0.05257"
},
"microsoft_vex": {
"current_release_date": "2026-01-07T14:35:45.000Z",
"cve": "CVE-2025-39805",
"id": "msrc_CVE-2025-39805",
"initial_release_date": "2025-09-02T00:00:00.000Z",
"product_status:fixed": "1",
"product_status:known_affected": "4",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "net: macb: fix unregister_netdev call order in macb_remove()",
"url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-39805.json",
"version": "3"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/ethernet/cadence/macb_main.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "7351782f2fc8ac31ced52e3d4e6fa120f819a7ab",
"status": "affected",
"version": "8b73fa3ae02b2401960de41b0454c0321377b203",
"versionType": "git"
},
{
"lessThan": "2b9719ccad38dffad7dbdd2f39896f723f9b9011",
"status": "affected",
"version": "8b73fa3ae02b2401960de41b0454c0321377b203",
"versionType": "git"
},
{
"lessThan": "ff0d3bad32108b57265e5b48f15327549af771d3",
"status": "affected",
"version": "8b73fa3ae02b2401960de41b0454c0321377b203",
"versionType": "git"
},
{
"lessThan": "775fe690fd4a3337ad2115de2adb41b227d4dae7",
"status": "affected",
"version": "8b73fa3ae02b2401960de41b0454c0321377b203",
"versionType": "git"
},
{
"lessThan": "01b9128c5db1b470575d07b05b67ffa3cb02ebf1",
"status": "affected",
"version": "8b73fa3ae02b2401960de41b0454c0321377b203",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/net/ethernet/cadence/macb_main.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": "6.1.159",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.119",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.45",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.16.*",
"status": "unaffected",
"version": "6.16.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.17",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "66C144FE-7532-4F32-8D73-D42F84E0C8EB",
"versionEndExcluding": "6.12.45",
"versionStartIncluding": "5.18",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "EB781080-7001-4FA1-B388-517FFEFBC73E",
"versionEndExcluding": "6.16.5",
"versionStartIncluding": "6.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*",
"matchCriteriaId": "327D22EF-390B-454C-BD31-2ED23C998A1C",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*",
"matchCriteriaId": "C730CD9A-D969-4A8E-9522-162AAF7C0EE9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*",
"matchCriteriaId": "39982C4B-716E-4B2F-8196-FA301F47807D",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: macb: fix unregister_netdev call order in macb_remove()\n\nWhen removing a macb device, the driver calls phy_exit() before\nunregister_netdev(). This leads to a WARN from kernfs:\n\n ------------[ cut here ]------------\n kernfs: can not remove \u0027attached_dev\u0027, no directory\n WARNING: CPU: 1 PID: 27146 at fs/kernfs/dir.c:1683\n Call trace:\n kernfs_remove_by_name_ns+0xd8/0xf0\n sysfs_remove_link+0x24/0x58\n phy_detach+0x5c/0x168\n phy_disconnect+0x4c/0x70\n phylink_disconnect_phy+0x6c/0xc0 [phylink]\n macb_close+0x6c/0x170 [macb]\n ...\n macb_remove+0x60/0x168 [macb]\n platform_remove+0x5c/0x80\n ...\n\nThe warning happens because the PHY is being exited while the netdev\nis still registered. The correct order is to unregister the netdev\nbefore shutting down the PHY and cleaning up the MDIO bus.\n\nFix this by moving unregister_netdev() ahead of phy_exit() in\nmacb_remove()."
}
],
"id": "CVE-2025-39805",
"lastModified": "2026-06-17T09:18:30.897",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2025-09-16T13:15:50.750",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/01b9128c5db1b470575d07b05b67ffa3cb02ebf1"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/2b9719ccad38dffad7dbdd2f39896f723f9b9011"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/7351782f2fc8ac31ced52e3d4e6fa120f819a7ab"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/775fe690fd4a3337ad2115de2adb41b227d4dae7"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/ff0d3bad32108b57265e5b48f15327549af771d3"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "None",
"current_release_date": "2026-06-30T10:30:15+00:00",
"cve": "CVE-2025-39805",
"id": "CVE-2025-39805",
"initial_release_date": "2025-09-16T00:00:00+00:00",
"product_status:known_not_affected": "274",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: net: macb: fix unregister_netdev call order in macb_remove()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-39805.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…