CVE-2026-98003 (GCVE-0-2026-98003)
Vulnerability from cvelistv5
Published
2026-09-25 10:23
Modified
2026-10-21 12:54
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Do not reallocate GA log buffers on resume Commit c5e1a1eb9279 ("iommu/amd: Simplify and Consolidate Virtual APIC (AVIC) Enablement") moved the GA log allocation from iommu_init_pci() to enable_iommus_vapic(), which is called on every resume. iommu_init_ga_log() assigns iommu->ga_log and iommu->ga_log_tail unconditionally. Each resume therefore replaces the boot-time pointers and leaks both old allocations. The function also uses GFP_KERNEL from a syscore resume callback, where interrupts are disabled and the non-boot CPUs are offline. Return early if both buffers are already allocated. Clear the pointers in free_ga_log() so a partial allocation failure cannot leave ga_log dangling.
References
Impacted products
Vendor Product Version
Linux Linux Version: c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b
Version: c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b
Version: c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b
Version: c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b
Version: c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b
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{
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          "programFiles": [
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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\niommu/amd: Do not reallocate GA log buffers on resume\n\nCommit c5e1a1eb9279 (\"iommu/amd: Simplify and Consolidate Virtual APIC\n(AVIC) Enablement\") moved the GA log allocation from iommu_init_pci()\nto enable_iommus_vapic(), which is called on every resume.\n\niommu_init_ga_log() assigns iommu-\u003ega_log and iommu-\u003ega_log_tail\nunconditionally. Each resume therefore replaces the boot-time pointers\nand leaks both old allocations. The function also uses GFP_KERNEL from a\nsyscore resume callback, where interrupts are disabled and the non-boot\nCPUs are offline.\n\nReturn early if both buffers are already allocated. Clear the pointers\nin free_ga_log() so a partial allocation failure cannot leave ga_log\ndangling."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-21T12:54:02.989Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/8b95269d7a43b737c2c0e2fa77bf00cc8a3a4434"
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        {
          "url": "https://git.kernel.org/stable/c/ff85cdc2889e1c885eed218ee5bc0b59e0235b3f"
        },
        {
          "url": "https://git.kernel.org/stable/c/94458b80d3b203c1c9e2c98aa7319b7713e006c0"
        },
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          "url": "https://git.kernel.org/stable/c/b6be275d19cee01f8f1f08a2ff18337103d05d40"
        },
        {
          "url": "https://git.kernel.org/stable/c/00a7dd64888d6dd72110b40e2824a088cf7b7386"
        }
      ],
      "title": "iommu/amd: Do not reallocate GA log buffers on resume",
      "x_generator": {
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      }
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98003",
    "datePublished": "2026-09-25T10:23:30.522Z",
    "dateReserved": "2026-09-25T10:19:56.068Z",
    "dateUpdated": "2026-10-21T12:54:02.989Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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