CVE-2022-48933 (GCVE-0-2022-48933)
Vulnerability from cvelistv5
Published
2024-08-22 03:31
Modified
2025-05-04 08:26
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix memory leak during stateful obj update stateful objects can be updated from the control plane. The transaction logic allocates a temporary object for this purpose. The ->init function was called for this object, so plain kfree() leaks resources. We must call ->destroy function of the object. nft_obj_destroy does this, but it also decrements the module refcount, but the update path doesn't increment it. To avoid special-casing the update object release, do module_get for the update case too and release it via nft_obj_destroy().
References
Impacted products
Vendor Product Version
Linux Linux Version: d62d0ba97b5803183e70cfded7f7b9da76893bf5
Version: d62d0ba97b5803183e70cfded7f7b9da76893bf5
Version: d62d0ba97b5803183e70cfded7f7b9da76893bf5
Version: d62d0ba97b5803183e70cfded7f7b9da76893bf5
Version: d62d0ba97b5803183e70cfded7f7b9da76893bf5
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-48933",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T15:32:43.489248Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-12T17:32:59.806Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nf_tables_api.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "53026346a94c43f35c32b18804041bc483271d87",
              "status": "affected",
              "version": "d62d0ba97b5803183e70cfded7f7b9da76893bf5",
              "versionType": "git"
            },
            {
              "lessThan": "7e9880e81d3fd6a43c202f205717485290432826",
              "status": "affected",
              "version": "d62d0ba97b5803183e70cfded7f7b9da76893bf5",
              "versionType": "git"
            },
            {
              "lessThan": "e96e204ee6fa46702f6c94c3c69a09e69e0eac52",
              "status": "affected",
              "version": "d62d0ba97b5803183e70cfded7f7b9da76893bf5",
              "versionType": "git"
            },
            {
              "lessThan": "34bb90e407e3288f610558beaae54ecaa32b11c4",
              "status": "affected",
              "version": "d62d0ba97b5803183e70cfded7f7b9da76893bf5",
              "versionType": "git"
            },
            {
              "lessThan": "dad3bdeef45f81a6e90204bcc85360bb76eccec7",
              "status": "affected",
              "version": "d62d0ba97b5803183e70cfded7f7b9da76893bf5",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nf_tables_api.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.4"
            },
            {
              "lessThan": "5.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.182",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.103",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.26",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.16.*",
              "status": "unaffected",
              "version": "5.16.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.17",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.182",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.103",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.26",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.16.12",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.17",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: fix memory leak during stateful obj update\n\nstateful objects can be updated from the control plane.\nThe transaction logic allocates a temporary object for this purpose.\n\nThe -\u003einit function was called for this object, so plain kfree() leaks\nresources. We must call -\u003edestroy function of the object.\n\nnft_obj_destroy does this, but it also decrements the module refcount,\nbut the update path doesn\u0027t increment it.\n\nTo avoid special-casing the update object release, do module_get for\nthe update case too and release it via nft_obj_destroy()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:26:22.376Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/53026346a94c43f35c32b18804041bc483271d87"
        },
        {
          "url": "https://git.kernel.org/stable/c/7e9880e81d3fd6a43c202f205717485290432826"
        },
        {
          "url": "https://git.kernel.org/stable/c/e96e204ee6fa46702f6c94c3c69a09e69e0eac52"
        },
        {
          "url": "https://git.kernel.org/stable/c/34bb90e407e3288f610558beaae54ecaa32b11c4"
        },
        {
          "url": "https://git.kernel.org/stable/c/dad3bdeef45f81a6e90204bcc85360bb76eccec7"
        }
      ],
      "title": "netfilter: nf_tables: fix memory leak during stateful obj update",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-48933",
    "datePublished": "2024-08-22T03:31:27.165Z",
    "dateReserved": "2024-08-21T06:06:23.299Z",
    "dateUpdated": "2025-05-04T08:26:22.376Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-48933\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-08-22T04:15:16.143\",\"lastModified\":\"2024-08-23T01:50:09.313\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfilter: nf_tables: fix memory leak during stateful obj update\\n\\nstateful objects can be updated from the control plane.\\nThe transaction logic allocates a temporary object for this purpose.\\n\\nThe -\u003einit function was called for this object, so plain kfree() leaks\\nresources. We must call -\u003edestroy function of the object.\\n\\nnft_obj_destroy does this, but it also decrements the module refcount,\\nbut the update path doesn\u0027t increment it.\\n\\nTo avoid special-casing the update object release, do module_get for\\nthe update case too and release it via nft_obj_destroy().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfilter: nf_tables: corrige la p\u00e9rdida de memoria durante la actualizaci\u00f3n de objetos con estado. Los objetos con estado se pueden actualizar desde el plano de control. La l\u00f3gica de transacci\u00f3n asigna un objeto temporal para este prop\u00f3sito. La funci\u00f3n -\u0026gt;init fue llamada para este objeto, por lo que kfree() simple pierde recursos. Debemos llamar a la funci\u00f3n -\u0026gt;destruir del objeto. nft_obj_destroy hace esto, pero tambi\u00e9n disminuye el recuento del m\u00f3dulo, pero la ruta de actualizaci\u00f3n no lo incrementa. Para evitar usar may\u00fasculas y min\u00fasculas especiales en la versi\u00f3n del objeto de actualizaci\u00f3n, utilice module_get para el caso de actualizaci\u00f3n tambi\u00e9n y lib\u00e9rela mediante nft_obj_destroy().\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-401\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.4\",\"versionEndExcluding\":\"5.4.182\",\"matchCriteriaId\":\"F3EC14C1-75C4-4ECD-94D3-EB9151F1007E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.103\",\"matchCriteriaId\":\"1A95B717-3110-4D4F-B8FC-373919BB514D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.26\",\"matchCriteriaId\":\"9AB342AE-A62E-4947-A6EA-511453062B2B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.16.12\",\"matchCriteriaId\":\"C76BAB21-7F23-4AD8-A25F-CA7B262A2698\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/34bb90e407e3288f610558beaae54ecaa32b11c4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/53026346a94c43f35c32b18804041bc483271d87\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7e9880e81d3fd6a43c202f205717485290432826\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/dad3bdeef45f81a6e90204bcc85360bb76eccec7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e96e204ee6fa46702f6c94c3c69a09e69e0eac52\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-48933\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T15:32:43.489248Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:12.637Z\"}}], \"cna\": {\"title\": \"netfilter: nf_tables: fix memory leak during stateful obj update\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"d62d0ba97b5803183e70cfded7f7b9da76893bf5\", \"lessThan\": \"53026346a94c43f35c32b18804041bc483271d87\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d62d0ba97b5803183e70cfded7f7b9da76893bf5\", \"lessThan\": \"7e9880e81d3fd6a43c202f205717485290432826\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d62d0ba97b5803183e70cfded7f7b9da76893bf5\", \"lessThan\": \"e96e204ee6fa46702f6c94c3c69a09e69e0eac52\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d62d0ba97b5803183e70cfded7f7b9da76893bf5\", \"lessThan\": \"34bb90e407e3288f610558beaae54ecaa32b11c4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d62d0ba97b5803183e70cfded7f7b9da76893bf5\", \"lessThan\": \"dad3bdeef45f81a6e90204bcc85360bb76eccec7\", \"versionType\": \"git\"}], \"programFiles\": [\"net/netfilter/nf_tables_api.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.4\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.4\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.182\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.103\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.26\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.16.12\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.16.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/netfilter/nf_tables_api.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/53026346a94c43f35c32b18804041bc483271d87\"}, {\"url\": \"https://git.kernel.org/stable/c/7e9880e81d3fd6a43c202f205717485290432826\"}, {\"url\": \"https://git.kernel.org/stable/c/e96e204ee6fa46702f6c94c3c69a09e69e0eac52\"}, {\"url\": \"https://git.kernel.org/stable/c/34bb90e407e3288f610558beaae54ecaa32b11c4\"}, {\"url\": \"https://git.kernel.org/stable/c/dad3bdeef45f81a6e90204bcc85360bb76eccec7\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfilter: nf_tables: fix memory leak during stateful obj update\\n\\nstateful objects can be updated from the control plane.\\nThe transaction logic allocates a temporary object for this purpose.\\n\\nThe -\u003einit function was called for this object, so plain kfree() leaks\\nresources. We must call -\u003edestroy function of the object.\\n\\nnft_obj_destroy does this, but it also decrements the module refcount,\\nbut the update path doesn\u0027t increment it.\\n\\nTo avoid special-casing the update object release, do module_get for\\nthe update case too and release it via nft_obj_destroy().\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.182\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.103\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.26\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16.12\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17\", \"versionStartIncluding\": \"5.4\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T08:26:22.376Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-48933\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T08:26:22.376Z\", \"dateReserved\": \"2024-08-21T06:06:23.299Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-08-22T03:31:27.165Z\", \"assignerShortName\": \"Linux\"}",
      "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 seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.