ghsa-jc8g-4mch-vjcv
Vulnerability from github
Published
2025-10-13 15:31
Modified
2025-10-13 15:31
Details

In the Linux kernel, the following vulnerability has been resolved:

xfrm: xfrm_alloc_spi shouldn't use 0 as SPI

x->id.spi == 0 means "no SPI assigned", but since commit 94f39804d891 ("xfrm: Duplicate SPI Handling"), we now create states and add them to the byspi list with this value.

__xfrm_state_delete doesn't remove those states from the byspi list, since they shouldn't be there, and this shows up as a UAF the next time we go through the byspi list.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-39965"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-13T14:15:34Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: xfrm_alloc_spi shouldn\u0027t use 0 as SPI\n\nx-\u003eid.spi == 0 means \"no SPI assigned\", but since commit\n94f39804d891 (\"xfrm: Duplicate SPI Handling\"), we now create states\nand add them to the byspi list with this value.\n\n__xfrm_state_delete doesn\u0027t remove those states from the byspi list,\nsince they shouldn\u0027t be there, and this shows up as a UAF the next\ntime we go through the byspi list.",
  "id": "GHSA-jc8g-4mch-vjcv",
  "modified": "2025-10-13T15:31:18Z",
  "published": "2025-10-13T15:31:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39965"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0baf92d0b1590b903c1f4ead75e61715e50e8146"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9fcedabaae0096f712bbb4ccca6a8538af1cd1c8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a78e55776522373c446f18d5002a8de4b09e6bf7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cd8ae32e4e4652db55bce6b9c79267d8946765a9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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