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CVE-2026-72289

Estado: RecibidaCrítica (9.3)—

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

KVM: arm64: vgic: Check the interrupt is still ours before migrating it

vgic_prune_ap_list() drops both ap_list_lock and irq_lock while migrating an interrupt to another vCPU. After reacquiring the locks it only checks that the affinity is unchanged (target_vcpu == vgic_target_oracle(irq)) before moving the interrupt, which assumes that an interrupt whose affinity is preserved is still queued on this vCPU's ap_list.

That assumption no longer holds if the interrupt is taken off the ap_list while the locks are dropped. vgic_flush_pending_lpis() removes the interrupt from the list and sets irq->vcpu to NULL, but leaves enabled/pending/target_vcpu untouched.

Leer descripción completaMostrar menos

As the interrupt is still enabled and pending, vgic_target_oracle() returns the same target_vcpu, so the affinity check passes and list_del() is run a second time on an entry that has already been removed.

Also check that the interrupt is still assigned to this vCPU (irq->vcpu == vcpu) before moving it.

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 (AV:L, PR:N) que permite corrupción de memoria (C:H, I:H) en vgic del kernel Linux; conduce a DoS o corrupción de datos de interrupciones.

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 ProgramExecution 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)

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{
  "id": "CVE-2026-72289",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 9.3,
          "attackVector": "LOCAL",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 2.5
      }
    ]
  },
  "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": "0919e84c0fc1fc73525fdcedefab89ea8460f697",
              "lessThan": "3893e1fcf6f306b327a8358dcd1cbd077989a240",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "cb3efe1a354f1638726725c3ecee1ce8d1a7e2dc",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "versionType": "git"
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            {
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            {
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            {
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          ],
          "programFiles": [
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          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.7"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.7",
              "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.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T06:22:00.630",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0074b82cdfcb5fd13710a0ac308ade68ac6f6fbe",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/0658b09cba7fe866c6cd70cd2dcdfdcabe80328f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3893e1fcf6f306b327a8358dcd1cbd077989a240",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/79fdd2aa774e44847cd9bb7edc811e73e3dc7bfe",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
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      "url": "https://git.kernel.org/stable/c/cb3efe1a354f1638726725c3ecee1ce8d1a7e2dc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e363c0bc0226dc5ea5046a88e9a6864b82c45399",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: vgic: Check the interrupt is still ours before migrating it\n\nvgic_prune_ap_list() drops both ap_list_lock and irq_lock while migrating\nan interrupt to another vCPU. After reacquiring the locks it only checks\nthat the affinity is unchanged (target_vcpu == vgic_target_oracle(irq))\nbefore moving the interrupt, which assumes that an interrupt whose affinity\nis preserved is still queued on this vCPU's ap_list.\n\nThat assumption no longer holds if the interrupt is taken off the ap_list\nwhile the locks are dropped. vgic_flush_pending_lpis() removes the\ninterrupt from the list and sets irq->vcpu to NULL, but leaves\nenabled/pending/target_vcpu untouched. As the interrupt is still enabled\nand pending, vgic_target_oracle() returns the same target_vcpu, so the\naffinity check passes and list_del() is run a second time on an entry that\nhas already been removed.\n\nAlso check that the interrupt is still assigned to this vCPU\n(irq->vcpu == vcpu) before moving it."
    }
  ],
  "lastModified": "2026-08-17T06:18:31.673",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}