{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-50142",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-50142"
  ],
  "published": "2024-11-07T09:34:57Z",
  "summary": "xfrm: validate new SA's prefixlen using SA family when sel.family is unset",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: validate new SA's prefixlen using SA family when sel.family is unset\n\nThis expands the validation introduced in commit 07bf7908950a (\"xfrm:\nValidate address prefix lengths in the xfrm selector.\")\n\nsyzbot created an SA with\n    usersa.sel.family = AF_UNSPEC\n    usersa.sel.prefixlen_s = 128\n    usersa.family = AF_INET\n\nBecause of the AF_UNSPEC selector, verify_newsa_info doesn't put\nlimits on prefixlen_{s,d}. But then copy_from_user_state sets\nx->sel.family to usersa.family (AF_INET). Do the same conversion in\nverify_newsa_info before validating prefixlen_{s,d}, since that's how\nprefixlen is going to be used later on.",
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  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-50142"
    },
    {
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    "upstream_modified": "2026-05-12T04:54:46Z"
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}