« Volver al listado

CVE-2026-98252

Estado: RecibidaAlta (7)—

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

RDMA/core: fix refcount bug in iwpm_get_nlmsg_request()

iwpm_get_nlmsg_request() initializes refcount _after_ list_add_tail() making it accessible to global list where another CPU can kref_get() on nlmsg_request causing a refcount "addition on 0" bug. Fix this by initializing kref _before_ list_add_tail() so refcount for nlmsg_request can be incremented/decremented normally. In addition, also initialize every field before list_add_tail().

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 local en kernel RDMA con refcount bug (AV:L, PR:L). Permite DoS o escalada de privilegios. AV:L + PR:L + sin UI requiere acceso local previo, alineado con T1068.

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-2026-98252",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1
      }
    ]
  },
  "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": "30dc5e63d6a5ad24894b5512d10b228d73645a44",
              "lessThan": "52c13c63bb3662c108244e7447055e30bf40244e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "30dc5e63d6a5ad24894b5512d10b228d73645a44",
              "lessThan": "8a91609032d47e77bcb37bc8f6e88d89340d2709",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "30dc5e63d6a5ad24894b5512d10b228d73645a44",
              "lessThan": "ce8a379598bd4058081416abea4279fd05a95374",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "30dc5e63d6a5ad24894b5512d10b228d73645a44",
              "lessThan": "2fbac8a56004b6ce54fbfe845d4b25da6e0b55e8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "30dc5e63d6a5ad24894b5512d10b228d73645a44",
              "lessThan": "88e429a4e9bac3d2138011c5ca06254331f2587f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "30dc5e63d6a5ad24894b5512d10b228d73645a44",
              "lessThan": "e15eb536be4f646ce683d2867572b2200be877f7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "30dc5e63d6a5ad24894b5512d10b228d73645a44",
              "lessThan": "117871cdb8927542abd7b65ce5995bf0265a8c05",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "30dc5e63d6a5ad24894b5512d10b228d73645a44",
              "lessThan": "33fb59da49c4c3f5c2ec9f9d4447a56857a02c02",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/infiniband/core/iwpm_util.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.16"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "3.16",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.54",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.8",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc4",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/infiniband/core/iwpm_util.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-06T09:18:13.723",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/117871cdb8927542abd7b65ce5995bf0265a8c05",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2fbac8a56004b6ce54fbfe845d4b25da6e0b55e8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/33fb59da49c4c3f5c2ec9f9d4447a56857a02c02",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/52c13c63bb3662c108244e7447055e30bf40244e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/88e429a4e9bac3d2138011c5ca06254331f2587f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/8a91609032d47e77bcb37bc8f6e88d89340d2709",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ce8a379598bd4058081416abea4279fd05a95374",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e15eb536be4f646ce683d2867572b2200be877f7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/core: fix refcount bug in iwpm_get_nlmsg_request()\n\niwpm_get_nlmsg_request() initializes refcount _after_ list_add_tail()\nmaking it accessible to global list where another CPU can kref_get()\non nlmsg_request causing a refcount \"addition on 0\" bug. Fix this\nby initializing kref _before_ list_add_tail() so refcount for\nnlmsg_request can be incremented/decremented normally. In addition,\nalso initialize every field before list_add_tail()."
    }
  ],
  "lastModified": "2026-10-07T07:17:06.380",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}