CVE-2026-72282

Estado: RecibidaAlta (7.8)—

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

KVM: Move kvm_io_bus_get_dev() locking responsibilities to callers

kvm_io_bus_get_dev() returns a device that is only matched by the address, and nothing else. This can cause a lifetime issue if the matched device is not the expected type, as by the time the caller can introspect the object, it might be gone (the srcu lock having been dropped).

Given that there is only a single user of this helper, the simplest option is to move the locking responsibility to the caller, which can keep the srcu lock held for as long as it wants.

Note that this aligns with other kvm_io_bus*() helpers, which already require the srcu lock to be held by the callers.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 7.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.18%
Percentil entre todas las CVEs puntuadas: 6
Fecha de la puntuación: 5/10/2026

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.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation85 %
Impacto principalT1059 Command and Scripting Interpreterexecution75 %
Impacto secundarioT1078 Valid Accountsstealth · persistence · privilege escalation · initial access65 %

Vulnerabilidad local (AV:L/PR:L) en kernel de Linux sin interacción del usuario que permite escalada de privilegios mediante corrupción de memoria (use-after-free en kvm_io_bus_get_dev), potenciando ejecución de código y acceso a recursos del kernel.

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 Management Execution Prevention Application Developer Guidance Active Directory Configuration User Training User Account Management

Tecnologías afectadas (1)

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

Linux — Linux Kernel^AI

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2026-72282",
  "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": "8a39d00670f0792c1186e442e1dd28fe0326f2ee",
              "lessThan": "f398b7d92cd999191249830b9171c9bd787a9a91",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8a39d00670f0792c1186e442e1dd28fe0326f2ee",
              "lessThan": "1b4a3c2f0509e7b0e65667f3c36676a849ee2755",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8a39d00670f0792c1186e442e1dd28fe0326f2ee",
              "lessThan": "cfe107b02a3c3f049e0dc15b6a36625f048eda2a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8a39d00670f0792c1186e442e1dd28fe0326f2ee",
              "lessThan": "90d35d2b8e47afd68fe2a4dd0eeb60bc71641775",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8a39d00670f0792c1186e442e1dd28fe0326f2ee",
              "lessThan": "e01071ea006c9b952125ed8b0cc90ac7bd356cce",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8a39d00670f0792c1186e442e1dd28fe0326f2ee",
              "lessThan": "7099e7148f81c605bbc319b16ce0131540341560",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8a39d00670f0792c1186e442e1dd28fe0326f2ee",
              "lessThan": "0cbae0e296d27ce4c4cce83e34d40c2bfd8133aa",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8a39d00670f0792c1186e442e1dd28fe0326f2ee",
              "lessThan": "3a07249981629ace483ebbef81ef6b34c2d2afec",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "arch/arm64/kvm/vgic/vgic-its.c",
            "virt/kvm/kvm_main.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.8"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.8",
              "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": [
            "arch/arm64/kvm/vgic/vgic-its.c",
            "virt/kvm/kvm_main.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T06:21:58.680",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0cbae0e296d27ce4c4cce83e34d40c2bfd8133aa",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/1b4a3c2f0509e7b0e65667f3c36676a849ee2755",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3a07249981629ace483ebbef81ef6b34c2d2afec",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7099e7148f81c605bbc319b16ce0131540341560",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/90d35d2b8e47afd68fe2a4dd0eeb60bc71641775",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/cfe107b02a3c3f049e0dc15b6a36625f048eda2a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e01071ea006c9b952125ed8b0cc90ac7bd356cce",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f398b7d92cd999191249830b9171c9bd787a9a91",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: Move kvm_io_bus_get_dev() locking responsibilities to callers\n\nkvm_io_bus_get_dev() returns a device that is only matched by the\naddress, and nothing else. This can cause a lifetime issue if\nthe matched device is not the expected type, as by the time\nthe caller can introspect the object, it might be gone (the srcu\nlock having been dropped).\n\nGiven that there is only a single user of this helper, the simplest\noption is to move the locking responsibility to the caller, which\ncan keep the srcu lock held for as long as it wants.\n\nNote that this aligns with other kvm_io_bus*() helpers, which\nalready require the srcu lock to be held by the callers."
    }
  ],
  "lastModified": "2026-08-17T06:18:30.800",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}