iommu/amd: Do not reallocate GA log buffers on resume

{
  "id": "71657364fd40dcb044616bd37bac5ce66fa2ae5446c5bba6283ed761bc2cf08e",
  "url": "https://osv.dev/vulnerability/CVE-2026-98003",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "iommu/amd: Do not reallocate GA log buffers on resume",
    "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.",
    "evidence": "osv:CVE-2026-98003",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.6.160",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.114",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.53",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.7",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-98003",
      "aliases": [
        "CVE-2026-98003"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b"
                },
                {
                  "fixed": "8b95269d7a43b737c2c0e2fa77bf00cc8a3a4434"
                },
                {
                  "fixed": "ff85cdc2889e1c885eed218ee5bc0b59e0235b3f"
                },
                {
                  "fixed": "94458b80d3b203c1c9e2c98aa7319b7713e006c0"
                },
                {
                  "fixed": "b6be275d19cee01f8f1f08a2ff18337103d05d40"
                },
                {
                  "fixed": "00a7dd64888d6dd72110b40e2824a088cf7b7386"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98003.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.0.0"
                },
                {
                  "fixed": "6.6.160"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
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                {
                  "fixed": "6.12.114"
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            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.53"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.2.7"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98003.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:25.092171940Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/00a7dd64888d6dd72110b40e2824a088cf7b7386",
        "https://git.kernel.org/stable/c/8b95269d7a43b737c2c0e2fa77bf00cc8a3a4434",
        "https://git.kernel.org/stable/c/94458b80d3b203c1c9e2c98aa7319b7713e006c0",
        "https://git.kernel.org/stable/c/b6be275d19cee01f8f1f08a2ff18337103d05d40",
        "https://git.kernel.org/stable/c/ff85cdc2889e1c885eed218ee5bc0b59e0235b3f",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98003.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-98003",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98003.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-98003",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 491690,
  "published_at": "2026-09-25T10:23:30.522+00:00"
}