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CVE-2026-93072

Estado: RecibidaSin puntuar—

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

irqchip/renesas-irqc: Fix generic interrupt chip leak on remove

The driver allocates domain generic chips probe. However, on driver removal, the generic chips are not automatically freed when the interrupt domain is removed because the domain flags do not include IRQ_DOMAIN_FLAG_DESTROY_GC.

This causes both the domain generic chips structure and the associated generic chips to be leaked. Additionally, the generic chips remain on the global list and may later be accessed by generic interrupt chip suspend, resume, or shutdown callbacks after the driver has been removed, potentially resulting in a use-after-free and kernel crash.

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Fix the resource leak by setting IRQ_DOMAIN_FLAG_DESTROY_GC on the interrupt domain; this lets the interrupt domain core automatically release all generic chips when irq_domain_remove() is invoked, removing the need for manual cleanup calls in error paths and remove callback.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

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).

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-2026-93072",
  "cveTags": [],
  "metrics": {},
  "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": "99c221df33fbfa1b30e15dee879eb0a9ae1be353",
              "lessThan": "3d39757ef791f90028da9c8b7c1fbbb497237e58",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "99c221df33fbfa1b30e15dee879eb0a9ae1be353",
              "lessThan": "4bf7614d048434326081eef0ebef33cb77fe2ffc",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "99c221df33fbfa1b30e15dee879eb0a9ae1be353",
              "lessThan": "9acc996cb2e8477ae81bd7c067fec15202d6bc89",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "99c221df33fbfa1b30e15dee879eb0a9ae1be353",
              "lessThan": "7c614f83301d464e2fb498d63552490d137ea10d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "99c221df33fbfa1b30e15dee879eb0a9ae1be353",
              "lessThan": "616dd89d81ad9a3cf1cfff4088a4c43e4e00d6ba",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/irqchip/irq-renesas-irqc.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.4"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.4",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/irqchip/irq-renesas-irqc.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-17T17:18:01.087",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/3d39757ef791f90028da9c8b7c1fbbb497237e58",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4bf7614d048434326081eef0ebef33cb77fe2ffc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/616dd89d81ad9a3cf1cfff4088a4c43e4e00d6ba",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7c614f83301d464e2fb498d63552490d137ea10d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9acc996cb2e8477ae81bd7c067fec15202d6bc89",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nirqchip/renesas-irqc: Fix generic interrupt chip leak on remove\n\nThe driver allocates domain generic chips probe. However, on driver\nremoval, the generic chips are not automatically freed when the interrupt\ndomain is removed because the domain flags do not include\nIRQ_DOMAIN_FLAG_DESTROY_GC.\n\nThis causes both the domain generic chips structure and the associated\ngeneric chips to be leaked. Additionally, the generic chips remain on the\nglobal list and may later be accessed by generic interrupt chip suspend,\nresume, or shutdown callbacks after the driver has been removed,\npotentially resulting in a use-after-free and kernel crash.\n\nFix the resource leak by setting IRQ_DOMAIN_FLAG_DESTROY_GC on the\ninterrupt domain; this lets the interrupt domain core automatically\nrelease all generic chips when irq_domain_remove() is invoked, removing\nthe need for manual cleanup calls in error paths and remove callback."
    }
  ],
  "lastModified": "2026-09-17T17:18:01.087",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}