CVE-2026-98712 (GCVE-0-2026-98712)
Vulnerability from cvelistv5
Published
2026-10-18 15:46
Modified
2026-10-19 09:24
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic: Take a refcount on IRQs referenced by last_lr_irq Referencing the last interrupt inserted in an LR is rather fragile, as this interrupt can vanish if a concurrently unmapped LPI. Solve this by bumping up the refcount on the interrupt when populating last_lr_irq, and drop it at vgic_prune_ap_list() time, when LPIs are being reclaimed.
Impacted products
Vendor Product Version
Linux Linux Version: 6da5e537f5afe091658e846da1949d7e557d2ade
Version: 6da5e537f5afe091658e846da1949d7e557d2ade
Version: cd28ca4c27ed5929f61bbed8a967c20519facb88
Version: 6.19.9   ≤
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/arm64/kvm/vgic/vgic.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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          "vendor": "Linux",
          "versions": [
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              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: vgic: Take a refcount on IRQs referenced by last_lr_irq\n\nReferencing the last interrupt inserted in an LR is rather fragile, as\nthis interrupt can vanish if a concurrently unmapped LPI.\n\nSolve this by bumping up the refcount on the interrupt when populating\nlast_lr_irq, and drop it at vgic_prune_ap_list() time, when LPIs are\nbeing reclaimed."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:24:23.386Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8b25393d16a5ca8df907bd7ee1ff2e9d85678b3c"
        },
        {
          "url": "https://git.kernel.org/stable/c/19bc5d79ece613f242b5ec03921a3b465321bfed"
        }
      ],
      "title": "KVM: arm64: vgic: Take a refcount on IRQs referenced by last_lr_irq",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98712",
    "datePublished": "2026-10-18T15:46:44.857Z",
    "dateReserved": "2026-09-25T10:25:14.365Z",
    "dateUpdated": "2026-10-19T09:24:23.386Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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