octeontx2-pf: Fix potential use after free in otx2_tc_add_flow()

{
  "id": "ef355e1bd5c7274d4b3918d314cd0913ffdaed2bf4e3617b962bd0c69021335b",
  "url": "https://osv.dev/vulnerability/CVE-2025-39978",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "octeontx2-pf: Fix potential use after free in otx2_tc_add_flow()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: Fix potential use after free in otx2_tc_add_flow() This code calls kfree_rcu(new_node, rcu) and then dereferences \"new_node\" and then dereferences it on the next line. Two lines later, we take a mutex so I don't think this is an RCU safe region. Re-order it to do the dereferences before queuing up the free.",
    "evidence": "osv:CVE-2025-39978",
    "products": [
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        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
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            "value": "6.6.109",
            "evidence": "/affected/1/ranges"
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          {
            "value": "6.12.50",
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            "value": "6.16.10",
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    "severity": "high",
    "structured": {
      "id": "CVE-2025-39978",
      "aliases": [
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          "type": "CVSS_V3",
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      "modified": "2026-10-28T02:30:30.363072183Z",
      "provider": "osv",
      "references": [
        "https://cert-portal.siemens.com/productcert/html/ssa-019113.html",
        "https://cert-portal.siemens.com/productcert/html/ssa-457936.html",
        "https://git.kernel.org/stable/c/5723120423a753a220b8b2954b273838b9d7e74a",
        "https://git.kernel.org/stable/c/a8a63f27c3a8a3714210d32b12fd0f16d0337414",
        "https://git.kernel.org/stable/c/c41b2941a024d4ec7c768e16ffb10a74b188fced",
        "https://git.kernel.org/stable/c/d9c70e93ec5988ab07ad2a92d9f9d12867f02c56",
        "https://git.kernel.org/stable/c/df2c071061ed52d2225d97b212d27ecedf456b8a",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39978.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-39978",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
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    "severity_evidence": "/severity/0/score"
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  "source_id": "core-osv",
  "document_id": 497353,
  "published_at": "2025-10-15T07:55:58.949+00:00"
}