CVE-2021-47164 (GCVE-0-2021-47164)

Vulnerability from cvelistv5 – Published: 2024-03-25 09:16 – Updated: 2025-05-04 07:05
VLAI?
Title
net/mlx5e: Fix null deref accessing lag dev
Summary
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix null deref accessing lag dev It could be the lag dev is null so stop processing the event. In bond_enslave() the active/backup slave being set before setting the upper dev so first event is without an upper dev. After setting the upper dev with bond_master_upper_dev_link() there is a second event and in that event we have an upper dev.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 7e51891a237f9ea319f53f9beb83afb0077d88e6 , < 2e4b0b95a489259f9d35a3db17023061f8f3d587 (git)
Affected: 7e51891a237f9ea319f53f9beb83afb0077d88e6 , < bdfd3593a8248eea6ecfcbf7b47b56b86515672d (git)
Affected: 7e51891a237f9ea319f53f9beb83afb0077d88e6 , < 83026d83186bc48bb41ee4872f339b83f31dfc55 (git)
Create a notification for this product.
    Linux Linux Affected: 5.8
Unaffected: 0 , < 5.8 (semver)
Unaffected: 5.10.42 , ≤ 5.10.* (semver)
Unaffected: 5.12.9 , ≤ 5.12.* (semver)
Unaffected: 5.13 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47164",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-03-28T18:24:43.257372Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:14:45.571Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:24:40.229Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/2e4b0b95a489259f9d35a3db17023061f8f3d587"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/bdfd3593a8248eea6ecfcbf7b47b56b86515672d"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/83026d83186bc48bb41ee4872f339b83f31dfc55"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/en/rep/bond.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2e4b0b95a489259f9d35a3db17023061f8f3d587",
              "status": "affected",
              "version": "7e51891a237f9ea319f53f9beb83afb0077d88e6",
              "versionType": "git"
            },
            {
              "lessThan": "bdfd3593a8248eea6ecfcbf7b47b56b86515672d",
              "status": "affected",
              "version": "7e51891a237f9ea319f53f9beb83afb0077d88e6",
              "versionType": "git"
            },
            {
              "lessThan": "83026d83186bc48bb41ee4872f339b83f31dfc55",
              "status": "affected",
              "version": "7e51891a237f9ea319f53f9beb83afb0077d88e6",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/en/rep/bond.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.8"
            },
            {
              "lessThan": "5.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.12.*",
              "status": "unaffected",
              "version": "5.12.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.42",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.12.9",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.13",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Fix null deref accessing lag dev\n\nIt could be the lag dev is null so stop processing the event.\nIn bond_enslave() the active/backup slave being set before setting the\nupper dev so first event is without an upper dev.\nAfter setting the upper dev with bond_master_upper_dev_link() there is\na second event and in that event we have an upper dev."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T07:05:23.324Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2e4b0b95a489259f9d35a3db17023061f8f3d587"
        },
        {
          "url": "https://git.kernel.org/stable/c/bdfd3593a8248eea6ecfcbf7b47b56b86515672d"
        },
        {
          "url": "https://git.kernel.org/stable/c/83026d83186bc48bb41ee4872f339b83f31dfc55"
        }
      ],
      "title": "net/mlx5e: Fix null deref accessing lag dev",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47164",
    "datePublished": "2024-03-25T09:16:17.592Z",
    "dateReserved": "2024-03-25T09:12:14.109Z",
    "dateUpdated": "2025-05-04T07:05:23.324Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"cna\": {\"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-05-29T05:03:09.305Z\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/mlx5e: Fix null deref accessing lag dev\\n\\nIt could be the lag dev is null so stop processing the event.\\nIn bond_enslave() the active/backup slave being set before setting the\\nupper dev so first event is without an upper dev.\\nAfter setting the upper dev with bond_master_upper_dev_link() there is\\na second event and in that event we have an upper dev.\"}], \"affected\": [{\"product\": \"Linux\", \"vendor\": \"Linux\", \"defaultStatus\": \"unaffected\", \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"programFiles\": [\"drivers/net/ethernet/mellanox/mlx5/core/en/rep/bond.c\"], \"versions\": [{\"version\": \"7e51891a237f\", \"lessThan\": \"2e4b0b95a489\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"7e51891a237f\", \"lessThan\": \"bdfd3593a824\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"7e51891a237f\", \"lessThan\": \"83026d83186b\", \"status\": \"affected\", \"versionType\": \"git\"}]}, {\"product\": \"Linux\", \"vendor\": \"Linux\", \"defaultStatus\": \"affected\", \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"programFiles\": [\"drivers/net/ethernet/mellanox/mlx5/core/en/rep/bond.c\"], \"versions\": [{\"version\": \"5.8\", \"status\": \"affected\"}, {\"version\": \"0\", \"lessThan\": \"5.8\", \"status\": \"unaffected\", \"versionType\": \"custom\"}, {\"version\": \"5.10.42\", \"lessThanOrEqual\": \"5.10.*\", \"status\": \"unaffected\", \"versionType\": \"custom\"}, {\"version\": \"5.12.9\", \"lessThanOrEqual\": \"5.12.*\", \"status\": \"unaffected\", \"versionType\": \"custom\"}, {\"version\": \"5.13\", \"lessThanOrEqual\": \"*\", \"status\": \"unaffected\", \"versionType\": \"original_commit_for_fix\"}]}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/2e4b0b95a489259f9d35a3db17023061f8f3d587\"}, {\"url\": \"https://git.kernel.org/stable/c/bdfd3593a8248eea6ecfcbf7b47b56b86515672d\"}, {\"url\": \"https://git.kernel.org/stable/c/83026d83186bc48bb41ee4872f339b83f31dfc55\"}], \"title\": \"net/mlx5e: Fix null deref accessing lag dev\", \"x_generator\": {\"engine\": \"bippy-a5840b7849dd\"}}, \"adp\": [{\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47164\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-03-28T18:24:43.257372Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-23T19:01:19.880Z\"}, \"title\": \"CISA ADP Vulnrichment\"}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47164\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"Linux\", \"dateReserved\": \"2024-03-25T09:12:14.109Z\", \"datePublished\": \"2024-03-25T09:16:17.592Z\", \"dateUpdated\": \"2024-06-04T17:14:45.571Z\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.