{
  "cveId": "CVE-2025-39836",
  "url": "https://patchblox.com/security/cve/CVE-2025-39836",
  "summary": "CVE-2025-39836 is fixed in 18 products on 1 platform, first by DEBIAN-CVE-2025-39836, released September 16, 2025. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  efi: stmm: Fix incorrect buffer allocation metho...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  efi: stmm: Fix incorrect buffer allocation method  The communication buffer allocated by setup_mm_hdr() is later on passed to tee_shm_register_kernel_buf(). The latter expects those buffers to be contiguous pages, but setup_mm_hdr() just uses kmalloc(). That can cause various corruptions or BUGs, specifically since commit 9aec2fb0fd5e (\u0022slab: allocate frozen pages\u0022), though it was broken before as well.  Fix this by using alloc_pages_exact() instead of kmalloc().",
  "published": "2025-09-16T14:15:51Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00154,
  "epssPercentile": 0.04587,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "dtb-aarch64",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.6.1",
      "fix": "OPENSUSE-SU-2025:20081-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2025-20081-1",
      "released": "2025-11-25T07:35:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-64kb",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.6.1",
      "fix": "OPENSUSE-SU-2025:20081-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2025-20081-1",
      "released": "2025-11-25T07:35:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-64kb",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.31.1",
      "fix": "SUSE-SU-2026:0447-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0447-1",
      "released": "2026-02-11T14:05:07Z"
    },
    {
      "platform": "linux",
      "product": "kernel-64kb",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.6.1",
      "fix": "SUSE-SU-2025:21139-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2025-21139-1",
      "released": "2025-11-25T07:34:57Z"
    },
    {
      "platform": "linux",
      "product": "kernel-azure",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.20.27.1",
      "fix": "SUSE-SU-2026:0472-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0472-1",
      "released": "2026-02-12T11:26:05Z"
    },
    {
      "platform": "linux",
      "product": "kernel-default",
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      "fix": "OPENSUSE-SU-2025:20081-1",
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      "released": "2025-11-25T07:35:00Z"
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    {
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      "fix": "SUSE-SU-2026:0447-1",
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      "released": "2026-02-11T14:05:07Z"
    },
    {
      "platform": "linux",
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      "fix": "SUSE-SU-2025:21139-1",
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      "released": "2025-11-25T07:34:57Z"
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    {
      "platform": "linux",
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      "fix": "OPENSUSE-SU-2025:20081-1",
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      "released": "2025-11-25T07:35:00Z"
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      "released": "2026-02-11T14:05:07Z"
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    {
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      "fix": "SUSE-SU-2025:21139-1",
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      "released": "2025-11-25T07:34:57Z"
    },
    {
      "platform": "linux",
      "product": "kernel-docs",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.6.1",
      "fix": "OPENSUSE-SU-2025:20081-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2025-20081-1",
      "released": "2025-11-25T07:35:00Z"
    },
    {
      "platform": "linux",
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      "fix": "SUSE-SU-2026:0447-1",
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      "released": "2026-02-11T14:05:07Z"
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    {
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      "fix": "SUSE-SU-2025:21139-1",
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      "released": "2025-11-25T07:34:57Z"
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    {
      "platform": "linux",
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      "fix": "OPENSUSE-SU-2025:20081-1",
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      "released": "2025-11-25T07:35:00Z"
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    {
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      "fix": "SUSE-SU-2025:21139-1",
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      "released": "2025-11-25T07:34:57Z"
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    {
      "platform": "linux",
      "product": "kernel-livepatch-SLE15-SP7-RT_Update_9",
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      "fix": "SUSE-SU-2026:0587-1",
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      "released": "2026-02-20T10:04:28Z"
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      "fix": "SUSE-SU-2026:0447-1",
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  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}