net: libwx: fix the using of Rx buffer DMA

{
  "id": "fb301946ca92e63b3e566d01eeca4effd7f83c72377325fbf7090da883ca1ce2",
  "url": "https://osv.dev/vulnerability/CVE-2025-38533",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "net: libwx: fix the using of Rx buffer DMA",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: net: libwx: fix the using of Rx buffer DMA The wx_rx_buffer structure contained two DMA address fields: 'dma' and 'page_dma'. However, only 'page_dma' was actually initialized and used to program the Rx descriptor. But 'dma' was uninitialized and used in some paths. This could lead to undefined behavior, including DMA errors or use-after-free, if the uninitialized 'dma' was used. Althrough such error has not yet occurred, it is worth fixing in the code.",
    "evidence": "osv:CVE-2025-38533",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.6.100",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.40",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.15.8",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "CVE-2025-38533",
      "aliases": [
        "CVE-2025-38533"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
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          "database_specific": {
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        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.3.0"
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                {
                  "fixed": "6.6.100"
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            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.7.0"
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                {
                  "fixed": "6.12.40"
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            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
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                {
                  "fixed": "6.15.8"
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38533.json"
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        }
      ],
      "modified": "2026-10-28T02:30:24.563845404Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/027701180a7bcb64c42eab291133ef0c87b5b6c5",
        "https://git.kernel.org/stable/c/05c37b574997892a40a0e9b9b88a481566b2367d",
        "https://git.kernel.org/stable/c/5fd77cc6bd9b368431a815a780e407b7781bcca0",
        "https://git.kernel.org/stable/c/ba7c793f96c1c2b944bb6f423d7243f3afc30fe9",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38533.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-38533",
        "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/2025/38xxx/CVE-2025-38533.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-38533",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 490840,
  "published_at": "2025-08-16T11:12:25.978+00:00"
}