CVE-2025-68312 (GCVE-0-2025-68312)
Vulnerability from cvelistv5 – Published: 2025-12-16 15:39 – Updated: 2026-06-16 16:26
VLAI
EPSS
VEX
Title
usbnet: Prevents free active kevent
Summary
In the Linux kernel, the following vulnerability has been resolved:
usbnet: Prevents free active kevent
The root cause of this issue are:
1. When probing the usbnet device, executing usbnet_link_change(dev, 0, 0);
put the kevent work in global workqueue. However, the kevent has not yet
been scheduled when the usbnet device is unregistered. Therefore, executing
free_netdev() results in the "free active object (kevent)" error reported
here.
2. Another factor is that when calling usbnet_disconnect()->unregister_netdev(),
if the usbnet device is up, ndo_stop() is executed to cancel the kevent.
However, because the device is not up, ndo_stop() is not executed.
The solution to this problem is to cancel the kevent before executing
free_netdev().
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-16 16:25 UTC
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
8b4588b8b00b299be16a35be67b331d8fdba03f3 , < 285d4b953f2ca03c358f986718dd89ee9bde632e
(git)
Affected: 135199a2edd459d2b123144efcd7f9bcd95128e4 , < 88a38b135d69f5db9024ff6527232f1b51be8915 (git) Affected: 635fd8953e4309b54ca6a81bed1d4a87668694f4 , < 43005002b60ef3424719ecda16d124714b45da3b (git) Affected: a69e617e533edddf3fa3123149900f36e0a6dc74 , < 3a10619fdefd3051aeb14860e4d4335529b4e94d (git) Affected: a69e617e533edddf3fa3123149900f36e0a6dc74 , < 9a579d6a39513069d298eee70770bbac8a148565 (git) Affected: a69e617e533edddf3fa3123149900f36e0a6dc74 , < 2ce1de32e05445d77fc056f6ff8339cfb78a5f84 (git) Affected: a69e617e533edddf3fa3123149900f36e0a6dc74 , < 5158fb8da162e3982940f30cd01ed77bdf42c6fc (git) Affected: a69e617e533edddf3fa3123149900f36e0a6dc74 , < 420c84c330d1688b8c764479e5738bbdbf0a33de (git) Affected: d2d6b530d89b0a912148018027386aa049f0a309 (git) Affected: e2a521a7dcc463c5017b4426ca0804e151faeff7 (git) Affected: 7f77dcbc030c2faa6d8e8a594985eeb34018409e (git) Affected: d49bb8cf9bfaa06aa527eb30f1a52a071da2e32f (git) Affected: db3b738ae5f726204876f4303c49cfdf4311403f (git) Affected: 5.4.211 , < 5.4.302 (semver) Affected: 5.10.137 , < 5.10.247 (semver) Affected: 5.15.61 , < 5.15.197 (semver) Affected: 4.9.326 , < 4.10 (semver) Affected: 4.14.291 , < 4.15 (semver) Affected: 4.19.256 , < 4.20 (semver) Affected: 5.18.18 , < 5.19 (semver) Affected: 5.19.2 , < 5.20 (semver) |
guessed | |
| Linux | Linux |
Affected:
6.0
Unaffected: 0 , < 6.0 (semver) Unaffected: 5.4.302 , ≤ 5.4.* (semver) Unaffected: 5.10.247 , ≤ 5.10.* (semver) Unaffected: 5.15.197 , ≤ 5.15.* (semver) Unaffected: 6.1.159 , ≤ 6.1.* (semver) Unaffected: 6.6.117 , ≤ 6.6.* (semver) Unaffected: 6.12.58 , ≤ 6.12.* (semver) Unaffected: 6.17.8 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix) |
guessed |
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}
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},
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"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/285d4b953f2ca03c358f986718dd89ee9bde632e"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/2ce1de32e05445d77fc056f6ff8339cfb78a5f84"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/3a10619fdefd3051aeb14860e4d4335529b4e94d"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/420c84c330d1688b8c764479e5738bbdbf0a33de"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/43005002b60ef3424719ecda16d124714b45da3b"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/5158fb8da162e3982940f30cd01ed77bdf42c6fc"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/88a38b135d69f5db9024ff6527232f1b51be8915"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/9a579d6a39513069d298eee70770bbac8a148565"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Deferred"
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-07-08T12:19:40+00:00",
"cve": "CVE-2025-68312",
"id": "CVE-2025-68312",
"initial_release_date": "2025-12-16T00:00:00+00:00",
"product_status:known_affected": "198",
"product_status:known_not_affected": "76",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: usbnet: Prevents free active kevent",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68312.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-68312",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-16T16:25:55.310081Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-16T16:26:02.678Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/usb/usbnet.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
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"status": "affected",
"version": "8b4588b8b00b299be16a35be67b331d8fdba03f3",
"versionType": "git"
},
{
"lessThan": "88a38b135d69f5db9024ff6527232f1b51be8915",
"status": "affected",
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"versionType": "git"
},
{
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"status": "affected",
"version": "635fd8953e4309b54ca6a81bed1d4a87668694f4",
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{
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"status": "affected",
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},
{
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"status": "affected",
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"versionType": "git"
},
{
"lessThan": "2ce1de32e05445d77fc056f6ff8339cfb78a5f84",
"status": "affected",
"version": "a69e617e533edddf3fa3123149900f36e0a6dc74",
"versionType": "git"
},
{
"lessThan": "5158fb8da162e3982940f30cd01ed77bdf42c6fc",
"status": "affected",
"version": "a69e617e533edddf3fa3123149900f36e0a6dc74",
"versionType": "git"
},
{
"lessThan": "420c84c330d1688b8c764479e5738bbdbf0a33de",
"status": "affected",
"version": "a69e617e533edddf3fa3123149900f36e0a6dc74",
"versionType": "git"
},
{
"status": "affected",
"version": "d2d6b530d89b0a912148018027386aa049f0a309",
"versionType": "git"
},
{
"status": "affected",
"version": "e2a521a7dcc463c5017b4426ca0804e151faeff7",
"versionType": "git"
},
{
"status": "affected",
"version": "7f77dcbc030c2faa6d8e8a594985eeb34018409e",
"versionType": "git"
},
{
"status": "affected",
"version": "d49bb8cf9bfaa06aa527eb30f1a52a071da2e32f",
"versionType": "git"
},
{
"status": "affected",
"version": "db3b738ae5f726204876f4303c49cfdf4311403f",
"versionType": "git"
},
{
"lessThan": "5.4.302",
"status": "affected",
"version": "5.4.211",
"versionType": "semver"
},
{
"lessThan": "5.10.247",
"status": "affected",
"version": "5.10.137",
"versionType": "semver"
},
{
"lessThan": "5.15.197",
"status": "affected",
"version": "5.15.61",
"versionType": "semver"
},
{
"lessThan": "4.10",
"status": "affected",
"version": "4.9.326",
"versionType": "semver"
},
{
"lessThan": "4.15",
"status": "affected",
"version": "4.14.291",
"versionType": "semver"
},
{
"lessThan": "4.20",
"status": "affected",
"version": "4.19.256",
"versionType": "semver"
},
{
"lessThan": "5.19",
"status": "affected",
"version": "5.18.18",
"versionType": "semver"
},
{
"lessThan": "5.20",
"status": "affected",
"version": "5.19.2",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/net/usb/usbnet.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.0"
},
{
"lessThan": "6.0",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.302",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.247",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.197",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.159",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.117",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.58",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.4.302",
"versionStartIncluding": "5.4.211",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.247",
"versionStartIncluding": "5.10.137",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.197",
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},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.159",
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"vulnerable": true
},
{
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"versionStartIncluding": "6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.58",
"versionStartIncluding": "6.0",
"vulnerable": true
},
{
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"versionEndExcluding": "6.17.8",
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"vulnerable": true
},
{
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"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.9.326",
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},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.18.18",
"vulnerable": true
},
{
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"versionStartIncluding": "5.19.2",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusbnet: Prevents free active kevent\n\nThe root cause of this issue are:\n1. When probing the usbnet device, executing usbnet_link_change(dev, 0, 0);\nput the kevent work in global workqueue. However, the kevent has not yet\nbeen scheduled when the usbnet device is unregistered. Therefore, executing\nfree_netdev() results in the \"free active object (kevent)\" error reported\nhere.\n\n2. Another factor is that when calling usbnet_disconnect()-\u003eunregister_netdev(),\nif the usbnet device is up, ndo_stop() is executed to cancel the kevent.\nHowever, because the device is not up, ndo_stop() is not executed.\n\nThe solution to this problem is to cancel the kevent before executing\nfree_netdev()."
}
],
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"dateUpdated": "2026-05-23T16:02:40.215Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
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"url": "https://git.kernel.org/stable/c/285d4b953f2ca03c358f986718dd89ee9bde632e"
},
{
"url": "https://git.kernel.org/stable/c/88a38b135d69f5db9024ff6527232f1b51be8915"
},
{
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},
{
"url": "https://git.kernel.org/stable/c/3a10619fdefd3051aeb14860e4d4335529b4e94d"
},
{
"url": "https://git.kernel.org/stable/c/9a579d6a39513069d298eee70770bbac8a148565"
},
{
"url": "https://git.kernel.org/stable/c/2ce1de32e05445d77fc056f6ff8339cfb78a5f84"
},
{
"url": "https://git.kernel.org/stable/c/5158fb8da162e3982940f30cd01ed77bdf42c6fc"
},
{
"url": "https://git.kernel.org/stable/c/420c84c330d1688b8c764479e5738bbdbf0a33de"
}
],
"title": "usbnet: Prevents free active kevent",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-68312",
"datePublished": "2025-12-16T15:39:43.174Z",
"dateReserved": "2025-12-16T14:48:05.294Z",
"dateUpdated": "2026-06-16T16:26:09.604Z",
"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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