io_uring/zcrx: fix sgtable leak on mapping failures

{
  "id": "356ba80a2a2ba95cea5f71010996a2947ecf9b5f129dbdcfcf5fb431ae0f9316",
  "url": "https://osv.dev/vulnerability/CVE-2026-43224",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "io_uring/zcrx: fix sgtable leak on mapping failures",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: io_uring/zcrx: fix sgtable leak on mapping failures In an unlikely case when io_populate_area_dma() fails, which could only happen on a PAGE_POOL_32BIT_ARCH_WITH_64BIT_DMA machine, io_zcrx_map_area() will have an initialised and not freed table. It was supposed to be cleaned up in the error path, but !is_mapped prevents that.",
    "evidence": "osv:CVE-2026-43224",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.18.16",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.19.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-43224",
      "aliases": [
        "CVE-2026-43224"
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      "affected": [
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              "type": "GIT",
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                  "fixed": "ef075c1464ac9047e2cf7d23cb020bfd0b8e4b60"
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                  "fixed": "a983aae397767e9da931128ff2b5bf9066513ce3"
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        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.18.0"
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                {
                  "fixed": "6.18.16"
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              ]
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            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.19.0"
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                {
                  "fixed": "6.19.6"
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43224.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:52.521851574Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/a983aae397767e9da931128ff2b5bf9066513ce3",
        "https://git.kernel.org/stable/c/ef075c1464ac9047e2cf7d23cb020bfd0b8e4b60",
        "https://git.kernel.org/stable/c/f1ae403324311e143ef20e53cf9a5f01e312f7c9",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43224.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-43224",
        "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/2026/43xxx/CVE-2026-43224.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-43224",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 521067,
  "published_at": "2026-05-06T11:28:23.62+00:00"
}