FKIE_CVE-2021-47345

Vulnerability from fkie_nvd - Published: 2024-05-21 15:15 - Updated: 2026-06-17 04:17
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/032c68b4f5be128a2167f35b558b7cec88fe4972Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/07583ba2e2d8947c3d365d97608cb436510885acPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3d08b5917984f737f32d5bee9737b9075c3895c6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/40b613db3a95bc27998e4097d74c2f7e5d083a0bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4893c938f2a140a74be91779e45e4a7fa111198fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/74f160ead74bfe5f2b38afb4fcf86189f9ff40c9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e2da8ce2a9543f3ca5c93369bd1fe6eeb572101aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e4e062da082a199357ba4911145f331d40139ad8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f4f553d67236145fa5fd203ed7b35b9377e19939Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/032c68b4f5be128a2167f35b558b7cec88fe4972Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/07583ba2e2d8947c3d365d97608cb436510885acPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/3d08b5917984f737f32d5bee9737b9075c3895c6Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/40b613db3a95bc27998e4097d74c2f7e5d083a0bPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4893c938f2a140a74be91779e45e4a7fa111198fPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/74f160ead74bfe5f2b38afb4fcf86189f9ff40c9Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e2da8ce2a9543f3ca5c93369bd1fe6eeb572101aPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e4e062da082a199357ba4911145f331d40139ad8Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f4f553d67236145fa5fd203ed7b35b9377e19939Patch
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 *
To clipboard 

{
  "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": [
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              "status": "affected",
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              "versionType": "git"
            },
            {
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            },
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              "versionType": "git"
            },
            {
              "lessThan": "3d08b5917984f737f32d5bee9737b9075c3895c6",
              "status": "affected",
              "version": "e51060f08a61965c4dd91516d82fe90617152590",
              "versionType": "git"
            },
            {
              "lessThan": "f4f553d67236145fa5fd203ed7b35b9377e19939",
              "status": "affected",
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            },
            {
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              "status": "affected",
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              "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
            },
            {
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B93AEDB9-C52B-4222-8F9A-882DAD9EF5B2",
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            {
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            {
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              "matchCriteriaId": "93289127-DFB3-4515-89DD-50521FF8B7FF",
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            {
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              "matchCriteriaId": "79D13C82-E06F-4A70-A3D1-C09494FBC94D",
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              "vulnerable": true
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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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              "vulnerable": true
            }
          ],
          "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": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "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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Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.