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CVE-2026-72041

Estado: RecibidaCrítica (9.8)—

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

espintcp: use sk_msg_free_partial to fix partial send

sk_msg_free_partial() ensures consistency of the skmsg at every iteration, without having to manually handle uncharges and offsets. This simplifies the code, and fixes some bugs in skmsg accounting when we don't send the full contents.

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.

Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N indica explotación remota sin privilegios (T1190). Fallo en kernel de Linux puede permitir ejecución de código o DoS; alineado con pista y criticidad.

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

Privileged Account ManagementFilter Network TrafficVulnerability ScanningRestrict Web-Based ContentNetwork SegmentationLimit Software Installation

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)

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{
  "id": "CVE-2026-72041",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "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": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
              "lessThan": "518dcb84b997dff461800b079e5f2596389f766a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
              "lessThan": "4ea8c051b4bd7feec7749a980f2f70e1782b84d7",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "a977f78adce40b39d90d9567e7987bb110102810",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "54d73f18f8919735f4d04d6f43374f75756c0180",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "14c0b42c8a2cd9b5361bbff45b52f69c62c6a286",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
              "lessThan": "a66d45e0ce6d73cd79962d422388e61bfaf0cb50",
              "versionType": "git"
            },
            {
              "status": "affected",
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            {
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              "lessThan": "007800408002d871f5699bdb944f985896730b8f",
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            }
          ],
          "programFiles": [
            "net/xfrm/espintcp.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.6"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.6",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.266",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.217",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.184",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "net/xfrm/espintcp.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T06:21:13.257",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/007800408002d871f5699bdb944f985896730b8f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/14c0b42c8a2cd9b5361bbff45b52f69c62c6a286",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4ea8c051b4bd7feec7749a980f2f70e1782b84d7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/518dcb84b997dff461800b079e5f2596389f766a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/54d73f18f8919735f4d04d6f43374f75756c0180",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a338ce41bc933d8f74c39d9b3b6f1d8ca53d9714",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a66d45e0ce6d73cd79962d422388e61bfaf0cb50",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a977f78adce40b39d90d9567e7987bb110102810",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nespintcp: use sk_msg_free_partial to fix partial send\n\nsk_msg_free_partial() ensures consistency of the skmsg at every\niteration, without having to manually handle uncharges and offsets.\nThis simplifies the code, and fixes some bugs in skmsg accounting when\nwe don't send the full contents."
    }
  ],
  "lastModified": "2026-08-23T13:16:38.020",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}