« Volver al listado

CVE-2023-54035

Estado: AplazadaAlta (7.8)—

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nf_tables: fix underflow in chain reference counter

Set element addition error path decrements reference counter on chains twice: once on element release and again via nft_data_release().

Then, d6b478666ffa ("netfilter: nf_tables: fix underflow in object reference counter") incorrectly fixed this by removing the stateful object reference count decrement.

Restore the stateful object decrement as in b91d90368837 ("netfilter: nf_tables: fix leaking object reference count") and let nft_data_release() decrement the chain reference counter, so this is done only once.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad de kernel en netfilter con privs locales (PR:L) permite DoS por underflow en contador de referencias de cadenas, causando corrupción de memoria y negación de servicio.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence ProgramFilter Network TrafficExecution PreventionApplication Isolation and SandboxingExploit ProtectionUpdate Software

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2023-54035",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "35651fde1a7bb54dde0a46d35cd0d7136869ae86",
              "lessThan": "b068314fd8ce751a7f906e55bb90f3551815f1a0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "628bd3e49cba1c066228e23d71a852c23e26da73",
              "lessThan": "9c959671abc7d4ffdf34eed10c64492d43cb6a3c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "628bd3e49cba1c066228e23d71a852c23e26da73",
              "lessThan": "b389139f12f287b8ed2e2628b72df89a081f0b59",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "bc9f791d2593f17e39f87c6e2b3a36549a3705b1",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "3c7ec098e3b588434a8b07ea9b5b36f04cef1f50",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a136b7942ad2a50de708f76ea299ccb45ac7a7f9",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "25aa2ad37c2162be1c0bc4fe6397f7e4c13f00f8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d60be2da67d172aecf866302c91ea11533eca4d9",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "dc7cdf8cbcbf8b13de1df93f356ec04cdeef5c41",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4.19.316",
              "lessThan": "4.20",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "5.4.262",
              "lessThan": "5.5",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "5.10.188",
              "lessThan": "5.11",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "5.15.121",
              "lessThan": "5.16",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "6.3.10",
              "lessThan": "6.4",
              "versionType": "semver"
            }
          ],
          "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": "6.4"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.4",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.4.4",
              "versionType": "semver",
              "lessThanOrEqual": "6.4.*"
            },
            {
              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "net/netfilter/nf_tables_api.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-24T11:15:56.490",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/9c959671abc7d4ffdf34eed10c64492d43cb6a3c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b068314fd8ce751a7f906e55bb90f3551815f1a0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b389139f12f287b8ed2e2628b72df89a081f0b59",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: fix underflow in chain reference counter\n\nSet element addition error path decrements reference counter on chains\ntwice: once on element release and again via nft_data_release().\n\nThen, d6b478666ffa (\"netfilter: nf_tables: fix underflow in object\nreference counter\") incorrectly fixed this by removing the stateful\nobject reference count decrement.\n\nRestore the stateful object decrement as in b91d90368837 (\"netfilter:\nnf_tables: fix leaking object reference count\") and let\nnft_data_release() decrement the chain reference counter, so this is\ndone only once."
    }
  ],
  "lastModified": "2026-08-04T10:19:25.870",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}