{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-21980",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-21980"
  ],
  "published": "2025-04-01T15:46:27Z",
  "summary": "sched: address a potential NULL pointer dereference in the GRED scheduler.",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched: address a potential NULL pointer dereference in the GRED scheduler.\n\nIf kzalloc in gred_init returns a NULL pointer, the code follows the\nerror handling path, invoking gred_destroy. This, in turn, calls\ngred_offload, where memset could receive a NULL pointer as input,\npotentially leading to a kernel crash.\n\nWhen table->opt is NULL in gred_init(), gred_change_table_def()\nis not called yet, so it is not necessary to call ->ndo_setup_tc()\nin gred_offload().",
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  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-21980"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d02c9acd68950a444acda18d514e2b41f846cb7f"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0f0a152957d64ce45b4c27c687e7d087e8f45079"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/68896dd50180b38ea552e49a6a00b685321e5769"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5f996b4f80c2cef1f9c77275055e7fcba44c9199"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/115ef44a98220fddfab37a39a19370497cd718b9"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}