CVE-2026-93072 (GCVE-0-2026-93072)
Vulnerability from cvelistv5
Published
2026-09-17 16:10
Modified
2026-10-19 09:05
Severity ?
Summary
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. 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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 99c221df33fbfa1b30e15dee879eb0a9ae1be353
Version: 99c221df33fbfa1b30e15dee879eb0a9ae1be353
Version: 99c221df33fbfa1b30e15dee879eb0a9ae1be353
Version: 99c221df33fbfa1b30e15dee879eb0a9ae1be353
Version: 99c221df33fbfa1b30e15dee879eb0a9ae1be353
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{
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          "programFiles": [
            "drivers/irqchip/irq-renesas-irqc.c"
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      "cpeApplicability": [
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          "nodes": [
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      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:05:08.128Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3d39757ef791f90028da9c8b7c1fbbb497237e58"
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        {
          "url": "https://git.kernel.org/stable/c/4bf7614d048434326081eef0ebef33cb77fe2ffc"
        },
        {
          "url": "https://git.kernel.org/stable/c/9acc996cb2e8477ae81bd7c067fec15202d6bc89"
        },
        {
          "url": "https://git.kernel.org/stable/c/7c614f83301d464e2fb498d63552490d137ea10d"
        },
        {
          "url": "https://git.kernel.org/stable/c/616dd89d81ad9a3cf1cfff4088a4c43e4e00d6ba"
        }
      ],
      "title": "irqchip/renesas-irqc: Fix generic interrupt chip leak on remove",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93072",
    "datePublished": "2026-09-17T16:10:55.755Z",
    "dateReserved": "2026-09-17T15:57:05.661Z",
    "dateUpdated": "2026-10-19T09:05:08.128Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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