{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-21898",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-21898"
  ],
  "published": "2025-04-01T15:31:03Z",
  "summary": "ftrace: Avoid potential division by zero in function_stat_show()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nftrace: Avoid potential division by zero in function_stat_show()\n\nCheck whether denominator expression x * (x - 1) * 1000 mod {2^32, 2^64}\nproduce zero and skip stddev computation in that case.\n\nFor now don't care about rec->counter * rec->counter overflow because\nrec->time * rec->time overflow will likely happen earlier.",
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  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-21898"
    },
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    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-24T06:48:58Z"
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