cve-2021-46973
Vulnerability from cvelistv5
Published
2024-02-27 18:47
Modified
2024-11-04 11:56
Summary
net: qrtr: Avoid potential use after free in MHI send
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website


{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "linux_kernel",
            "vendor": "linux",
            "versions": [
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                "lessThan": "48ec949ac979",
                "status": "affected",
                "version": "6e728f321393",
                "versionType": "git"
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                "status": "affected",
                "version": "6e728f321393",
                "versionType": "git"
              },
              {
                "lessThanOrEqual": "03c649dee8b1",
                "status": "affected",
                "version": "6e728f321393",
                "versionType": "git"
              },
              {
                "lessThan": "47a017f33943",
                "status": "affected",
                "version": "6e728f321393",
                "versionType": "git"
              },
              {
                "status": "affected",
                "version": "5.8"
              },
              {
                "lessThan": "5.8",
                "status": "unaffected",
                "version": "0",
                "versionType": "custom"
              },
              {
                "lessThanOrEqual": "5.11",
                "status": "unaffected",
                "version": "5.10.35",
                "versionType": "custom"
              },
              {
                "lessThanOrEqual": "5.12",
                "status": "unaffected",
                "version": "5.11.19",
                "versionType": "custom"
              },
              {
                "lessThanOrEqual": "5.13",
                "status": "unaffected",
                "version": "5.12.2",
                "versionType": "custom"
              },
              {
                "lessThanOrEqual": "*",
                "status": "unaffected",
                "version": "5.13",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 8.4,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2021-46973",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-02-28T18:49:05.463431Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-07-25T15:54:16.377Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:17:42.894Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/48ec949ac979b4b42d740f67b6177797af834f80"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/ea474054c2cc6e1284604b21361f475c7cc8c0a0"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/03c649dee8b1eb5600212a249542a70f47a5ab40"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/47a017f33943278570c072bc71681809b2567b3a"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/qrtr/mhi.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "48ec949ac979",
              "status": "affected",
              "version": "6e728f321393",
              "versionType": "git"
            },
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              "lessThan": "ea474054c2cc",
              "status": "affected",
              "version": "6e728f321393",
              "versionType": "git"
            },
            {
              "lessThan": "03c649dee8b1",
              "status": "affected",
              "version": "6e728f321393",
              "versionType": "git"
            },
            {
              "lessThan": "47a017f33943",
              "status": "affected",
              "version": "6e728f321393",
              "versionType": "git"
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          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/qrtr/mhi.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": "5.10.35",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.11.*",
              "status": "unaffected",
              "version": "5.11.19",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.12.*",
              "status": "unaffected",
              "version": "5.12.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: Avoid potential use after free in MHI send\n\nIt is possible that the MHI ul_callback will be invoked immediately\nfollowing the queueing of the skb for transmission, leading to the\ncallback decrementing the refcount of the associated sk and freeing the\nskb.\n\nAs such the dereference of skb and the increment of the sk refcount must\nhappen before the skb is queued, to avoid the skb to be used after free\nand potentially the sk to drop its last refcount.."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-11-04T11:56:56.833Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/48ec949ac979b4b42d740f67b6177797af834f80"
        },
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          "url": "https://git.kernel.org/stable/c/ea474054c2cc6e1284604b21361f475c7cc8c0a0"
        },
        {
          "url": "https://git.kernel.org/stable/c/03c649dee8b1eb5600212a249542a70f47a5ab40"
        },
        {
          "url": "https://git.kernel.org/stable/c/47a017f33943278570c072bc71681809b2567b3a"
        }
      ],
      "title": "net: qrtr: Avoid potential use after free in MHI send",
      "x_generator": {
        "engine": "bippy-9e1c9544281a"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-46973",
    "datePublished": "2024-02-27T18:47:07.880Z",
    "dateReserved": "2024-02-27T18:42:55.944Z",
    "dateUpdated": "2024-11-04T11:56:56.833Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-46973\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-02-27T19:04:07.457\",\"lastModified\":\"2024-08-01T13:42:29.060\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: qrtr: Avoid potential use after free in MHI send\\n\\nIt is possible that the MHI ul_callback will be invoked immediately\\nfollowing the queueing of the skb for transmission, leading to the\\ncallback decrementing the refcount of the associated sk and freeing the\\nskb.\\n\\nAs such the dereference of skb and the increment of the sk refcount must\\nhappen before the skb is queued, to avoid the skb to be used after free\\nand potentially the sk to drop its last refcount..\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: qrtr: Evite el potencial use after free en el env\u00edo MHI. Es posible que MHI ul_callback se invoque inmediatamente despu\u00e9s de la puesta en cola del skb para la transmisi\u00f3n, lo que provocar\u00e1 que la devoluci\u00f3n de llamada disminuya el recuento del sk asociado y liberaci\u00f3n del skb. Como tal, la desreferencia de skb y el incremento del refcount de sk deben ocurrir antes de que el skb se ponga en cola, para evitar que el skb haga use after free y potencialmente que el sk elimine su \u00faltimo refcount.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\",\"baseScore\":8.4,\"baseSeverity\":\"HIGH\"},\"exploitabilityScore\":2.5,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/03c649dee8b1eb5600212a249542a70f47a5ab40\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/47a017f33943278570c072bc71681809b2567b3a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/48ec949ac979b4b42d740f67b6177797af834f80\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ea474054c2cc6e1284604b21361f475c7cc8c0a0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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