CVE-2025-39965 (GCVE-0-2025-39965)
Vulnerability from cvelistv5
Published
2025-10-13 13:48
Modified
2025-10-13 13:48
Severity ?
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 3d8090bb53424432fa788fe9a49e8ceca74f0544
Version: 2fc5b54368a1bf1d2d74b4d3b8eea5309a653e38
Version: 29e9158f91f99057dbd35db5e8674d93b38549fe
Version: 94f39804d891cffe4ce17737d295f3b195bc7299
Version: c67d4e7a8f90fb6361ca89d4d5c9a28f4e935e47
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   Linux Linux Version: 6.6.103   ≤
Version: 6.12.43   ≤
Version: 6.16.2   ≤
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/xfrm/xfrm_state.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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          "vendor": "Linux",
          "versions": [
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      "cpeApplicability": [
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          "nodes": [
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              ],
              "negate": false,
              "operator": "OR"
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-13T13:48:31.033Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0baf92d0b1590b903c1f4ead75e61715e50e8146"
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          "url": "https://git.kernel.org/stable/c/9fcedabaae0096f712bbb4ccca6a8538af1cd1c8"
        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/cd8ae32e4e4652db55bce6b9c79267d8946765a9"
        }
      ],
      "title": "xfrm: xfrm_alloc_spi shouldn\u0027t use 0 as SPI",
      "x_generator": {
        "engine": "bippy-1.2.0"
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-39965",
    "datePublished": "2025-10-13T13:48:31.033Z",
    "dateReserved": "2025-04-16T07:20:57.149Z",
    "dateUpdated": "2025-10-13T13:48:31.033Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
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  }
}


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