« Volver al listado

CVE-2026-89510

Estado: RecibidaAlta (7.8)—

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

RDMA/cxgb4: Cancel reg_work before freeing device on remove

c4iw_uld_state_change() queues reg_work to register the RDMA device. c4iw_remove() can free ctx->dev while this work is pending or running, leaving c4iw_register_device() accessing the freed device.

Cancel reg_work before removing the device. The registration work can tear down ctx->dev when registration fails, so do not unregister or deallocate it again in that case.

This issue was found by an in-house static analysis tool.

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.

Acceso local (AV:L) sin interacción (UI:N) con privs ordinarias (PR:L) permite DoS por use-after-free en kernel RDMA; el texto cita 'freed device' y acceso a memoria liberada causando inestabilidad.

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-2026-89510",
  "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": "1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5",
              "lessThan": "e6e79e7be87c5ea92728060a3d7fb56890a91e45",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5",
              "lessThan": "672ee1981db10569ec96030bddb322f18382ec04",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5",
              "lessThan": "4681e731db07769846901cfabdd3e53f765eb9d3",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5",
              "lessThan": "3265d558dfafab8f12f5fba06ebbf15cae9f3225",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5",
              "lessThan": "fe9c591026c576d8b1f72aab5e4cd67350530763",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5",
              "lessThan": "85f438382a865a4dc4c50e6b884310bb2b60fc4d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5",
              "lessThan": "320e5258a53af0abc5abd9eb01519a48bab2dee8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5",
              "lessThan": "a7100601aa1a39f799a566acce10db20eaf4b7f2",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/infiniband/hw/cxgb4/device.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.15"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.15",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/infiniband/hw/cxgb4/device.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-11T20:19:33.390",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/320e5258a53af0abc5abd9eb01519a48bab2dee8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3265d558dfafab8f12f5fba06ebbf15cae9f3225",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4681e731db07769846901cfabdd3e53f765eb9d3",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/672ee1981db10569ec96030bddb322f18382ec04",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/85f438382a865a4dc4c50e6b884310bb2b60fc4d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a7100601aa1a39f799a566acce10db20eaf4b7f2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e6e79e7be87c5ea92728060a3d7fb56890a91e45",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/fe9c591026c576d8b1f72aab5e4cd67350530763",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/cxgb4: Cancel reg_work before freeing device on remove\n\nc4iw_uld_state_change() queues reg_work to register the RDMA device.\nc4iw_remove() can free ctx->dev while this work is pending or running,\nleaving c4iw_register_device() accessing the freed device.\n\nCancel reg_work before removing the device.  The registration work can\ntear down ctx->dev when registration fails, so do not unregister or\ndeallocate it again in that case.\n\nThis issue was found by an in-house static analysis tool."
    }
  ],
  "lastModified": "2026-09-14T13:19:07.537",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}