lib/test_hmm.c: handle src_pfns and dst_pfns allocation failure

{
  "id": "d3278014a43bedd09485f3a85f4942505f7250262c8fd218443965ccfb76499f",
  "url": "https://osv.dev/vulnerability/CVE-2024-38543",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "lib/test_hmm.c: handle src_pfns and dst_pfns allocation failure",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: lib/test_hmm.c: handle src_pfns and dst_pfns allocation failure The kcalloc() in dmirror_device_evict_chunk() will return null if the physical memory has run out. As a result, if src_pfns or dst_pfns is dereferenced, the null pointer dereference bug will happen. Moreover, the device is going away. If the kcalloc() fails, the pages mapping a chunk could not be evicted. So add a __GFP_NOFAIL flag in kcalloc(). Finally, as there is no need to have physically contiguous memory, Switch kcalloc() to kvcalloc() in order to avoid failing allocations.",
    "evidence": "osv:CVE-2024-38543",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.93",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.33",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.8.12",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.9.3",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2024-38543",
      "aliases": [
        "CVE-2024-38543"
      ],
      "affected": [
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              "type": "GIT",
              "events": [
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                  "introduced": "b2ef9f5a5cb37643ca5def3516c546457074b882"
                },
                {
                  "fixed": "1a21fdeea502658e315bd939409b755974f4fb64"
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                {
                  "fixed": "65e528a69cb3ed4a286c45b4afba57461c8b5b33"
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                {
                  "fixed": "ce47e8ead9a72834cc68431d53f8092ce69bebb7"
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                  "fixed": "c2af060d1c18beaec56351cf9c9bcbbc5af341a3"
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            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-38543.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.8.0"
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                {
                  "fixed": "6.1.93"
                }
              ]
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            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
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                {
                  "fixed": "6.6.33"
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              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.7.0"
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                  "fixed": "6.8.12"
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            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.9.0"
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                  "fixed": "6.9.3"
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          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-38543.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:27.989256166Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/1a21fdeea502658e315bd939409b755974f4fb64",
        "https://git.kernel.org/stable/c/3b20d18f475bd17309db640dbe7d7c7ebb5bc2bc",
        "https://git.kernel.org/stable/c/65e528a69cb3ed4a286c45b4afba57461c8b5b33",
        "https://git.kernel.org/stable/c/c2af060d1c18beaec56351cf9c9bcbbc5af341a3",
        "https://git.kernel.org/stable/c/ce47e8ead9a72834cc68431d53f8092ce69bebb7",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/38xxx/CVE-2024-38543.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-38543",
        "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/2024/38xxx/CVE-2024-38543.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-38543",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 494579,
  "published_at": "2024-06-19T13:35:17.994+00:00"
}