CVE-2026-23042 (GCVE-0-2026-23042)
Vulnerability from cvelistv5 – Published: 2026-02-04 16:00 – Updated: 2026-05-11 21:58
VLAI
EPSS
VEX
Title
idpf: fix aux device unplugging when rdma is not supported by vport
Summary
In the Linux kernel, the following vulnerability has been resolved:
idpf: fix aux device unplugging when rdma is not supported by vport
If vport flags do not contain VIRTCHNL2_VPORT_ENABLE_RDMA, driver does not
allocate vdev_info for this vport. This leads to kernel NULL pointer
dereference in idpf_idc_vport_dev_down(), which references vdev_info for
every vport regardless.
Check, if vdev_info was ever allocated before unplugging aux device.
Severity
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
be91128c579c86d295da4325f6ac4710e4e6d2b4 , < 0ad6d6e50e9d8bf596cfe77a882ddc20b29f525a
(git)
Affected: be91128c579c86d295da4325f6ac4710e4e6d2b4 , < 4648fb2f2e7210c53b85220ee07d42d1e4bae3f9 (git) |
guessed | |
| Linux | Linux |
Affected:
6.17
Unaffected: 0 , < 6.17 (semver) Unaffected: 6.18.6 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/ethernet/intel/idpf/idpf_idc.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
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"status": "affected",
"version": "be91128c579c86d295da4325f6ac4710e4e6d2b4",
"versionType": "git"
},
{
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"status": "affected",
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"versionType": "git"
}
]
},
{
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"product": "Linux",
"programFiles": [
"drivers/net/ethernet/intel/idpf/idpf_idc.c"
],
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"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.17"
},
{
"lessThan": "6.17",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.6",
"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": "6.18.6",
"versionStartIncluding": "6.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.19",
"versionStartIncluding": "6.17",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nidpf: fix aux device unplugging when rdma is not supported by vport\n\nIf vport flags do not contain VIRTCHNL2_VPORT_ENABLE_RDMA, driver does not\nallocate vdev_info for this vport. This leads to kernel NULL pointer\ndereference in idpf_idc_vport_dev_down(), which references vdev_info for\nevery vport regardless.\n\nCheck, if vdev_info was ever allocated before unplugging aux device."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T21:58:52.636Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/0ad6d6e50e9d8bf596cfe77a882ddc20b29f525a"
},
{
"url": "https://git.kernel.org/stable/c/4648fb2f2e7210c53b85220ee07d42d1e4bae3f9"
}
],
"title": "idpf: fix aux device unplugging when rdma is not supported by vport",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-23042",
"datePublished": "2026-02-04T16:00:25.466Z",
"dateReserved": "2026-01-13T15:37:45.944Z",
"dateUpdated": "2026-05-11T21:58:52.636Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-23042",
"date": "2026-09-14",
"epss": "0.0015",
"percentile": "0.04551"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-23042\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-02-04T16:16:19.680\",\"lastModified\":\"2026-06-17T10:20:45.737\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nidpf: fix aux device unplugging when rdma is not supported by vport\\n\\nIf vport flags do not contain VIRTCHNL2_VPORT_ENABLE_RDMA, driver does not\\nallocate vdev_info for this vport. This leads to kernel NULL pointer\\ndereference in idpf_idc_vport_dev_down(), which references vdev_info for\\nevery vport regardless.\\n\\nCheck, if vdev_info was ever allocated before unplugging aux device.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\\n\\nidpf: correcci\u00f3n de la desconexi\u00f3n del dispositivo auxiliar cuando rdma no es compatible con el vport\\n\\nSi los flags del vport no contienen VIRTCHNL2_VPORT_ENABLE_RDMA, el controlador no asigna vdev_info para este vport. Esto lleva a una desreferencia de puntero NULL del kernel en idpf_idc_vport_dev_down(), que referencia vdev_info para cada vport independientemente.\\n\\nCompruebe si vdev_info fue alguna vez asignado antes de desconectar el dispositivo auxiliar.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/ethernet/intel/idpf/idpf_idc.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"be91128c579c86d295da4325f6ac4710e4e6d2b4\",\"lessThan\":\"0ad6d6e50e9d8bf596cfe77a882ddc20b29f525a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"be91128c579c86d295da4325f6ac4710e4e6d2b4\",\"lessThan\":\"4648fb2f2e7210c53b85220ee07d42d1e4bae3f9\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/ethernet/intel/idpf/idpf_idc.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.17\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.17\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.6\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.19\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0ad6d6e50e9d8bf596cfe77a882ddc20b29f525a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4648fb2f2e7210c53b85220ee07d42d1e4bae3f9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-06-28T07:18:21+00:00",
"cve": "CVE-2026-23042",
"id": "CVE-2026-23042",
"initial_release_date": "2026-02-04T00:00:00+00:00",
"product_status:known_affected": "76",
"product_status:known_not_affected": "198",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: idpf: fix aux device unplugging when rdma is not supported by vport",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23042.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-07-15T05:33:36Z",
"cve": "CVE-2026-23042",
"id": "CVE-2026-23042",
"initial_release_date": "2026-02-05T00:25:57Z",
"product_status:first_fixed": "2",
"product_status:known_not_affected": "330",
"product_status:recommended": "145",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-23042",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-23042.json",
"version": "12"
}
}
}
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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.
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.
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