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CVE-2026-72226

Estado: RecibidaCrítica (9.8)—

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

batman-adv: tt: prevent TVLV OOB check overflow

A TT unicast TVLV contains the number of VLANs stored in it. This number is an u16 and gets multiplied by the size of the struct batadv_tvlv_tt_vlan_data (8 bytes). The size can therefore overflow the u16 used to store the tt_vlan_len. All additional safety checks to prevent out-of-bounds access of the TVLV buffer are invalid due to this overflow.

Using size_t prevents this overflow and ensures that the safety checks compare against the actual buffer requirements.

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.

Inferido por reglas deterministas a partir del vector CVSS y la CWE. Solo orientativo.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Vulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkFilter Network TrafficApplication Isolation and Sandboxing

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-2026-72226",
  "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": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
              "lessThan": "0de12a4c4847f571d82a9cd96bc633eded41d7c6",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
              "lessThan": "d6ff4764ff784ede25f5c83a6f5883a74c93a5ea",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
              "lessThan": "1898273c5dc8148267ef9f97cd2517a2822350e7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
              "lessThan": "604bd5042fbcd1ab9f7cd98fd847ec017aeede8a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
              "lessThan": "7319c0794f91be2734aac695794e7203606b49f8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
              "lessThan": "3256c05d5a9db34346eaf20f52dddde984852d77",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
              "lessThan": "6222b443686525cb5a9b6a9cecf23b2e2ab23e2a",
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            },
            {
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              "lessThan": "7a581d9aaba8c82bd6177fa36b2588eea77f6e2b",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "net/batman-adv/translation-table.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.13"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "3.13",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.261",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.178",
              "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/batman-adv/translation-table.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T06:21:49.383",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0de12a4c4847f571d82a9cd96bc633eded41d7c6",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/1898273c5dc8148267ef9f97cd2517a2822350e7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3256c05d5a9db34346eaf20f52dddde984852d77",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/604bd5042fbcd1ab9f7cd98fd847ec017aeede8a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6222b443686525cb5a9b6a9cecf23b2e2ab23e2a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7319c0794f91be2734aac695794e7203606b49f8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7a581d9aaba8c82bd6177fa36b2588eea77f6e2b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d6ff4764ff784ede25f5c83a6f5883a74c93a5ea",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: tt: prevent TVLV OOB check overflow\n\nA TT unicast TVLV contains the number of VLANs stored in it. This number is\nan u16 and gets multiplied by the size of the struct\nbatadv_tvlv_tt_vlan_data (8 bytes). The size can therefore overflow the u16\nused to store the tt_vlan_len. All additional safety checks to prevent\nout-of-bounds access of the TVLV buffer are invalid due to this overflow.\n\nUsing size_t prevents this overflow and ensures that the safety checks\ncompare against the actual buffer requirements."
    }
  ],
  "lastModified": "2026-08-17T06:18:23.773",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}