FKIE_CVE-2023-52581

Vulnerability from fkie_nvd - Published: 2024-03-02 22:15 - Updated: 2026-06-17 06:43
Severity
6.3 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix memleak when more than 255 elements expired When more than 255 elements expired we're supposed to switch to a new gc container structure. This never happens: u8 type will wrap before reaching the boundary and nft_trans_gc_space() always returns true. This means we recycle the initial gc container structure and lose track of the elements that came before. While at it, don't deref 'gc' after we've passed it to call_rcu.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/09c85f2d21ab6b5acba31a037985b13e8e6565b8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4aea243b6853d06c1d160a9955b759189aa02b14Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7cf055b43756b10aa2b851c927c940f5ed652125Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7e5d732e6902eb6a37b35480796838a145ae5f07Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a995a68e8a3b48533e47c856865d109a1f1a9d01Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cf5000a7787cbc10341091d37245a42c119d26c5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ef99506eaf1dc31feff1adfcfd68bc5535a22171Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/09c85f2d21ab6b5acba31a037985b13e8e6565b8Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4aea243b6853d06c1d160a9955b759189aa02b14Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/7cf055b43756b10aa2b851c927c940f5ed652125Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/7e5d732e6902eb6a37b35480796838a145ae5f07Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a995a68e8a3b48533e47c856865d109a1f1a9d01Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/cf5000a7787cbc10341091d37245a42c119d26c5Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ef99506eaf1dc31feff1adfcfd68bc5535a22171Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel 6.6
linux linux_kernel 6.6
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/net/netfilter/nf_tables.h",
            "net/netfilter/nf_tables_api.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7cf055b43756b10aa2b851c927c940f5ed652125",
              "status": "affected",
              "version": "8da1b048f9a501d3d7d38c188ba09d7d0d5b8c27",
              "versionType": "git"
            },
            {
              "lessThan": "a995a68e8a3b48533e47c856865d109a1f1a9d01",
              "status": "affected",
              "version": "bbdb3b65aa91aa0a32b212f27780b28987f2d94f",
              "versionType": "git"
            },
            {
              "lessThan": "09c85f2d21ab6b5acba31a037985b13e8e6565b8",
              "status": "affected",
              "version": "448be0774882f95a74fa5eb7519761152add601b",
              "versionType": "git"
            },
            {
              "lessThan": "ef99506eaf1dc31feff1adfcfd68bc5535a22171",
              "status": "affected",
              "version": "d19e8bf3ea4114dd21fc35da21f398203d7f7df1",
              "versionType": "git"
            },
            {
              "lessThan": "7e5d732e6902eb6a37b35480796838a145ae5f07",
              "status": "affected",
              "version": "ea3eb9f2192e4fc33b795673e56c97a21987f868",
              "versionType": "git"
            },
            {
              "lessThan": "4aea243b6853d06c1d160a9955b759189aa02b14",
              "status": "affected",
              "version": "5f68718b34a531a556f2f50300ead2862278da26",
              "versionType": "git"
            },
            {
              "lessThan": "cf5000a7787cbc10341091d37245a42c119d26c5",
              "status": "affected",
              "version": "5f68718b34a531a556f2f50300ead2862278da26",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "0624f190b5742a1527cd938295caa8dc5281d4cd",
              "versionType": "git"
            },
            {
              "lessThan": "6.5",
              "status": "affected",
              "version": "6.4.11",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "include/net/netfilter/nf_tables.h",
            "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": "6.5"
            },
            {
              "lessThan": "6.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.5.*",
              "status": "unaffected",
              "version": "6.5.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.6",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "37A7D3E0-22DF-4D92-9B5E-F8505D3471A2",
              "versionEndExcluding": "6.5.6",
              "versionStartIncluding": "6.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.6:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "84267A4F-DBC2-444F-B41D-69E15E1BEC97",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.6:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "FB440208-241C-4246-9A83-C1715C0DAA6C",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: fix memleak when more than 255 elements expired\n\nWhen more than 255 elements expired we\u0027re supposed to switch to a new gc\ncontainer structure.\n\nThis never happens: u8 type will wrap before reaching the boundary\nand nft_trans_gc_space() always returns true.\n\nThis means we recycle the initial gc container structure and\nlose track of the elements that came before.\n\nWhile at it, don\u0027t deref \u0027gc\u0027 after we\u0027ve passed it to call_rcu."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfilter: nf_tables: corrige memleak cuando caducan m\u00e1s de 255 elementos Cuando caducan m\u00e1s de 255 elementos, se supone que debemos cambiar a una nueva estructura de contenedor gc. Esto nunca sucede: el tipo u8 se ajustar\u00e1 antes de alcanzar el l\u00edmite y nft_trans_gc_space() siempre devuelve verdadero. Esto significa que reciclamos la estructura inicial del contenedor gc y perdemos la pista de los elementos anteriores. Mientras lo hace, no elimine \u0027gc\u0027 despu\u00e9s de que lo hayamos pasado a call_rcu."
    }
  ],
  "id": "CVE-2023-52581",
  "lastModified": "2026-06-17T06:43:04.583",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 5.2,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-52581",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-03-05T20:19:37.141289Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-03-02T22:15:49.727",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/09c85f2d21ab6b5acba31a037985b13e8e6565b8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/4aea243b6853d06c1d160a9955b759189aa02b14"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/7cf055b43756b10aa2b851c927c940f5ed652125"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/7e5d732e6902eb6a37b35480796838a145ae5f07"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a995a68e8a3b48533e47c856865d109a1f1a9d01"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/cf5000a7787cbc10341091d37245a42c119d26c5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/ef99506eaf1dc31feff1adfcfd68bc5535a22171"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/09c85f2d21ab6b5acba31a037985b13e8e6565b8"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/4aea243b6853d06c1d160a9955b759189aa02b14"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/7cf055b43756b10aa2b851c927c940f5ed652125"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/7e5d732e6902eb6a37b35480796838a145ae5f07"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a995a68e8a3b48533e47c856865d109a1f1a9d01"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/cf5000a7787cbc10341091d37245a42c119d26c5"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/ef99506eaf1dc31feff1adfcfd68bc5535a22171"
    }
  ],
  "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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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.

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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.
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  • 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.



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