CVE-2026-98359 (GCVE-0-2026-98359)
Vulnerability from cvelistv5 – Published: 2026-10-06 08:46 – Updated: 2026-10-06 08:46
VLAI
EPSS
VEX
Title
RDMA/core: Reject unregistering netdevs in ib_get_eth_speed
Summary
In the Linux kernel, the following vulnerability has been resolved:
RDMA/core: Reject unregistering netdevs in ib_get_eth_speed
ib_device_get_netdev() intentionally returns a referenced net_device even
when it is unregistering, so matching and cleanup callers can still find
the association. The reference keeps struct net_device allocated, but does
not guarantee that the device remains operational.
ib_get_eth_speed() uses the returned device operationally by invoking its
ethtool callback. Although that call is made under RTNL, the function does
not verify the registration state first. An asynchronous RDMA port query
can therefore call into a netdev after NETDEV_UNREGISTER and ndo_uninit
have completed.
Check for NETREG_REGISTERED while holding RTNL and return -ENODEV for a
device which is being unregistered. Keeping RTNL across the check and the
ethtool operation prevents unregister from starting between them.
Keep the speed fallback and warning under RTNL as well, so the warning can
safely read netdev->name. Drop the netdev reference before releasing RTNL
once all accesses to the device are complete.
Severity
No CVSS data available.
Assigner
References
6 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
d41861942fc55c14b6280d9568a0d0112037f065 , < be4b44c8b47c67a04c08b1a0aba18006b749ae6a
(git)
Affected: d41861942fc55c14b6280d9568a0d0112037f065 , < 45c60ffc79771bad154f224a05753191cf1b37bc (git) Affected: d41861942fc55c14b6280d9568a0d0112037f065 , < 520cd057f138ed8dbe8e05f0eae3a8ed4c5d3a5e (git) Affected: d41861942fc55c14b6280d9568a0d0112037f065 , < a219459fbd1b2598e63c81a52847eba6c28b72d2 (git) Affected: d41861942fc55c14b6280d9568a0d0112037f065 , < 5bd42f74ec3b4f4687fb600f367af0828d513b3c (git) Affected: d41861942fc55c14b6280d9568a0d0112037f065 , < ef9fbe1b93f3b617b96e86d5cd76b3fa44514cb5 (git) |
guessed | |
| Linux | Linux |
Affected:
4.14
Unaffected: 0 , < 4.14 (semver) Unaffected: 6.1.189 , ≤ 6.1.* (semver) Unaffected: 6.6.158 , ≤ 6.6.* (semver) Unaffected: 6.12.112 , ≤ 6.12.* (semver) Unaffected: 6.18.54 , ≤ 6.18.* (semver) Unaffected: 7.2.8 , ≤ 7.2.* (semver) Unaffected: 7.3-rc4 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/infiniband/core/verbs.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "be4b44c8b47c67a04c08b1a0aba18006b749ae6a",
"status": "affected",
"version": "d41861942fc55c14b6280d9568a0d0112037f065",
"versionType": "git"
},
{
"lessThan": "45c60ffc79771bad154f224a05753191cf1b37bc",
"status": "affected",
"version": "d41861942fc55c14b6280d9568a0d0112037f065",
"versionType": "git"
},
{
"lessThan": "520cd057f138ed8dbe8e05f0eae3a8ed4c5d3a5e",
"status": "affected",
"version": "d41861942fc55c14b6280d9568a0d0112037f065",
"versionType": "git"
},
{
"lessThan": "a219459fbd1b2598e63c81a52847eba6c28b72d2",
"status": "affected",
"version": "d41861942fc55c14b6280d9568a0d0112037f065",
"versionType": "git"
},
{
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"status": "affected",
"version": "d41861942fc55c14b6280d9568a0d0112037f065",
"versionType": "git"
},
{
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"status": "affected",
"version": "d41861942fc55c14b6280d9568a0d0112037f065",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/infiniband/core/verbs.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.14"
},
{
"lessThan": "4.14",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.54",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.3-rc4",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.189",
"versionStartIncluding": "4.14",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.158",
"versionStartIncluding": "4.14",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.112",
"versionStartIncluding": "4.14",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2.8",
"versionStartIncluding": "4.14",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.3-rc4",
"versionStartIncluding": "4.14",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/core: Reject unregistering netdevs in ib_get_eth_speed\n\nib_device_get_netdev() intentionally returns a referenced net_device even\nwhen it is unregistering, so matching and cleanup callers can still find\nthe association. The reference keeps struct net_device allocated, but does\nnot guarantee that the device remains operational.\n\nib_get_eth_speed() uses the returned device operationally by invoking its\nethtool callback. Although that call is made under RTNL, the function does\nnot verify the registration state first. An asynchronous RDMA port query\ncan therefore call into a netdev after NETDEV_UNREGISTER and ndo_uninit\nhave completed.\n\nCheck for NETREG_REGISTERED while holding RTNL and return -ENODEV for a\ndevice which is being unregistered. Keeping RTNL across the check and the\nethtool operation prevents unregister from starting between them.\n\nKeep the speed fallback and warning under RTNL as well, so the warning can\nsafely read netdev-\u003ename. Drop the netdev reference before releasing RTNL\nonce all accesses to the device are complete."
}
],
"providerMetadata": {
"dateUpdated": "2026-10-06T08:46:45.938Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/be4b44c8b47c67a04c08b1a0aba18006b749ae6a"
},
{
"url": "https://git.kernel.org/stable/c/45c60ffc79771bad154f224a05753191cf1b37bc"
},
{
"url": "https://git.kernel.org/stable/c/520cd057f138ed8dbe8e05f0eae3a8ed4c5d3a5e"
},
{
"url": "https://git.kernel.org/stable/c/a219459fbd1b2598e63c81a52847eba6c28b72d2"
},
{
"url": "https://git.kernel.org/stable/c/5bd42f74ec3b4f4687fb600f367af0828d513b3c"
},
{
"url": "https://git.kernel.org/stable/c/ef9fbe1b93f3b617b96e86d5cd76b3fa44514cb5"
}
],
"title": "RDMA/core: Reject unregistering netdevs in ib_get_eth_speed",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-98359",
"datePublished": "2026-10-06T08:46:45.938Z",
"dateReserved": "2026-09-25T10:25:14.344Z",
"dateUpdated": "2026-10-06T08:46:45.938Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-98359",
"date": "2026-10-06",
"epss": "0.00168",
"percentile": "0.05488"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/infiniband/core/verbs.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
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"versionType": "git"
},
{
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"status": "affected",
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"product": "Linux",
"programFiles": [
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.14"
},
{
"lessThan": "4.14",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.54",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.3-rc4",
"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\nRDMA/core: Reject unregistering netdevs in ib_get_eth_speed\n\nib_device_get_netdev() intentionally returns a referenced net_device even\nwhen it is unregistering, so matching and cleanup callers can still find\nthe association. The reference keeps struct net_device allocated, but does\nnot guarantee that the device remains operational.\n\nib_get_eth_speed() uses the returned device operationally by invoking its\nethtool callback. Although that call is made under RTNL, the function does\nnot verify the registration state first. An asynchronous RDMA port query\ncan therefore call into a netdev after NETDEV_UNREGISTER and ndo_uninit\nhave completed.\n\nCheck for NETREG_REGISTERED while holding RTNL and return -ENODEV for a\ndevice which is being unregistered. Keeping RTNL across the check and the\nethtool operation prevents unregister from starting between them.\n\nKeep the speed fallback and warning under RTNL as well, so the warning can\nsafely read netdev-\u003ename. Drop the netdev reference before releasing RTNL\nonce all accesses to the device are complete."
}
],
"id": "CVE-2026-98359",
"lastModified": "2026-10-06T09:18:29.660",
"metrics": {},
"published": "2026-10-06T09:18:29.660",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/45c60ffc79771bad154f224a05753191cf1b37bc"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/520cd057f138ed8dbe8e05f0eae3a8ed4c5d3a5e"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/5bd42f74ec3b4f4687fb600f367af0828d513b3c"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/a219459fbd1b2598e63c81a52847eba6c28b72d2"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/be4b44c8b47c67a04c08b1a0aba18006b749ae6a"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/ef9fbe1b93f3b617b96e86d5cd76b3fa44514cb5"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
}
}
}
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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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