CVE-2022-50212 (GCVE-0-2022-50212)
Vulnerability from cvelistv5
Published
2025-06-18 11:03
Modified
2025-06-18 11:03
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: do not allow CHAIN_ID to refer to another table When doing lookups for chains on the same batch by using its ID, a chain from a different table can be used. If a rule is added to a table but refers to a chain in a different table, it will be linked to the chain in table2, but would have expressions referring to objects in table1. Then, when table1 is removed, the rule will not be removed as its linked to a chain in table2. When expressions in the rule are processed or removed, that will lead to a use-after-free. When looking for chains by ID, use the table that was used for the lookup by name, and only return chains belonging to that same table.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0f49613a213d918af790c1276f79da741968de11
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/58e863f64ee3d0879297e5e53b646e4b91e59620
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/91501513016903077f91033fa5d2aa26cac399b2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/95f466d22364a33d183509629d0879885b4f547e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9e7dcb88ec8e85e4a8ad0ea494ea2f90f32d2583
Impacted products
Vendor Product Version
Linux Linux Version: 837830a4b439bfeb86c70b0115c280377c84714b
Version: 837830a4b439bfeb86c70b0115c280377c84714b
Version: 837830a4b439bfeb86c70b0115c280377c84714b
Version: 837830a4b439bfeb86c70b0115c280377c84714b
Version: 837830a4b439bfeb86c70b0115c280377c84714b
 Create a notification for this product.
   Linux Linux Version: 5.9
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "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": "9e7dcb88ec8e85e4a8ad0ea494ea2f90f32d2583",
              "status": "affected",
              "version": "837830a4b439bfeb86c70b0115c280377c84714b",
              "versionType": "git"
            },
            {
              "lessThan": "91501513016903077f91033fa5d2aa26cac399b2",
              "status": "affected",
              "version": "837830a4b439bfeb86c70b0115c280377c84714b",
              "versionType": "git"
            },
            {
              "lessThan": "0f49613a213d918af790c1276f79da741968de11",
              "status": "affected",
              "version": "837830a4b439bfeb86c70b0115c280377c84714b",
              "versionType": "git"
            },
            {
              "lessThan": "58e863f64ee3d0879297e5e53b646e4b91e59620",
              "status": "affected",
              "version": "837830a4b439bfeb86c70b0115c280377c84714b",
              "versionType": "git"
            },
            {
              "lessThan": "95f466d22364a33d183509629d0879885b4f547e",
              "status": "affected",
              "version": "837830a4b439bfeb86c70b0115c280377c84714b",
              "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": "5.9"
            },
            {
              "lessThan": "5.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.137",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.61",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.18.*",
              "status": "unaffected",
              "version": "5.18.18",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.19.*",
              "status": "unaffected",
              "version": "5.19.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.137",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.61",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18.18",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19.2",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: do not allow CHAIN_ID to refer to another table\n\nWhen doing lookups for chains on the same batch by using its ID, a chain\nfrom a different table can be used. If a rule is added to a table but\nrefers to a chain in a different table, it will be linked to the chain in\ntable2, but would have expressions referring to objects in table1.\n\nThen, when table1 is removed, the rule will not be removed as its linked to\na chain in table2. When expressions in the rule are processed or removed,\nthat will lead to a use-after-free.\n\nWhen looking for chains by ID, use the table that was used for the lookup\nby name, and only return chains belonging to that same table."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-06-18T11:03:50.366Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9e7dcb88ec8e85e4a8ad0ea494ea2f90f32d2583"
        },
        {
          "url": "https://git.kernel.org/stable/c/91501513016903077f91033fa5d2aa26cac399b2"
        },
        {
          "url": "https://git.kernel.org/stable/c/0f49613a213d918af790c1276f79da741968de11"
        },
        {
          "url": "https://git.kernel.org/stable/c/58e863f64ee3d0879297e5e53b646e4b91e59620"
        },
        {
          "url": "https://git.kernel.org/stable/c/95f466d22364a33d183509629d0879885b4f547e"
        }
      ],
      "title": "netfilter: nf_tables: do not allow CHAIN_ID to refer to another table",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50212",
    "datePublished": "2025-06-18T11:03:50.366Z",
    "dateReserved": "2025-06-18T10:57:27.429Z",
    "dateUpdated": "2025-06-18T11:03:50.366Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50212\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-06-18T11:15:52.087\",\"lastModified\":\"2025-06-18T13:47:40.833\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfilter: nf_tables: do not allow CHAIN_ID to refer to another table\\n\\nWhen doing lookups for chains on the same batch by using its ID, a chain\\nfrom a different table can be used. If a rule is added to a table but\\nrefers to a chain in a different table, it will be linked to the chain in\\ntable2, but would have expressions referring to objects in table1.\\n\\nThen, when table1 is removed, the rule will not be removed as its linked to\\na chain in table2. When expressions in the rule are processed or removed,\\nthat will lead to a use-after-free.\\n\\nWhen looking for chains by ID, use the table that was used for the lookup\\nby name, and only return chains belonging to that same table.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0f49613a213d918af790c1276f79da741968de11\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/58e863f64ee3d0879297e5e53b646e4b91e59620\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/91501513016903077f91033fa5d2aa26cac399b2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/95f466d22364a33d183509629d0879885b4f547e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9e7dcb88ec8e85e4a8ad0ea494ea2f90f32d2583\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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.