FKIE_CVE-2021-47345
Vulnerability from fkie_nvd - Published: 2024-05-21 15:15 - Updated: 2026-06-17 04:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
RDMA/cma: Fix rdma_resolve_route() memory leak
Fix a memory leak when "mda_resolve_route() is called more than once on
the same "rdma_cm_id".
This is possible if cma_query_handler() triggers the
RDMA_CM_EVENT_ROUTE_ERROR flow which puts the state machine back and
allows rdma_resolve_route() to be called again.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/infiniband/core/cma.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "40b613db3a95bc27998e4097d74c2f7e5d083a0b",
"status": "affected",
"version": "e51060f08a61965c4dd91516d82fe90617152590",
"versionType": "git"
},
{
"lessThan": "e2da8ce2a9543f3ca5c93369bd1fe6eeb572101a",
"status": "affected",
"version": "e51060f08a61965c4dd91516d82fe90617152590",
"versionType": "git"
},
{
"lessThan": "e4e062da082a199357ba4911145f331d40139ad8",
"status": "affected",
"version": "e51060f08a61965c4dd91516d82fe90617152590",
"versionType": "git"
},
{
"lessThan": "4893c938f2a140a74be91779e45e4a7fa111198f",
"status": "affected",
"version": "e51060f08a61965c4dd91516d82fe90617152590",
"versionType": "git"
},
{
"lessThan": "032c68b4f5be128a2167f35b558b7cec88fe4972",
"status": "affected",
"version": "e51060f08a61965c4dd91516d82fe90617152590",
"versionType": "git"
},
{
"lessThan": "3d08b5917984f737f32d5bee9737b9075c3895c6",
"status": "affected",
"version": "e51060f08a61965c4dd91516d82fe90617152590",
"versionType": "git"
},
{
"lessThan": "f4f553d67236145fa5fd203ed7b35b9377e19939",
"status": "affected",
"version": "e51060f08a61965c4dd91516d82fe90617152590",
"versionType": "git"
},
{
"lessThan": "07583ba2e2d8947c3d365d97608cb436510885ac",
"status": "affected",
"version": "e51060f08a61965c4dd91516d82fe90617152590",
"versionType": "git"
},
{
"lessThan": "74f160ead74bfe5f2b38afb4fcf86189f9ff40c9",
"status": "affected",
"version": "e51060f08a61965c4dd91516d82fe90617152590",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/infiniband/core/cma.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.18"
},
{
"lessThan": "2.6.18",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.4.*",
"status": "unaffected",
"version": "4.4.276",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.9.*",
"status": "unaffected",
"version": "4.9.276",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.14.*",
"status": "unaffected",
"version": "4.14.240",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"version": "4.19.198",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.133",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.51",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.12.*",
"status": "unaffected",
"version": "5.12.18",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.13.*",
"status": "unaffected",
"version": "5.13.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "5.14",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "10282F37-B17F-4974-967E-FCD5ABC9AB8E",
"versionEndExcluding": "4.4.276",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "C79FFC06-9530-4CD7-B651-01D786CC925E",
"versionEndExcluding": "4.9.276",
"versionStartIncluding": "4.5",
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},
{
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"versionEndExcluding": "4.19.198",
"versionStartIncluding": "4.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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},
{
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{
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"versionEndExcluding": "5.12.18",
"versionStartIncluding": "5.11",
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},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "853187F6-707A-487B-95C0-621B5211B43C",
"versionEndExcluding": "5.13.3",
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}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/cma: Fix rdma_resolve_route() memory leak\n\nFix a memory leak when \"mda_resolve_route() is called more than once on\nthe same \"rdma_cm_id\".\n\nThis is possible if cma_query_handler() triggers the\nRDMA_CM_EVENT_ROUTE_ERROR flow which puts the state machine back and\nallows rdma_resolve_route() to be called again."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: RDMA/cma: Reparar p\u00e9rdida de memoria rdma_resolve_route(). Reparar una p\u00e9rdida de memoria cuando se llama a \"mda_resolve_route() m\u00e1s de una vez en el mismo \"rdma_cm_id\". Esto es posible si cma_query_handler() desencadena el flujo RDMA_CM_EVENT_ROUTE_ERROR que devuelve la m\u00e1quina de estado y permite volver a llamar a rdma_resolve_route()."
}
],
"id": "CVE-2021-47345",
"lastModified": "2026-06-17T04:17:15.070",
"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"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2021-47345",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-09-10T15:38:47.058299Z",
"version": "2.0.3"
}
}
]
},
"published": "2024-05-21T15:15:21.143",
"references": [
{
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"tags": [
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],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-401"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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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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