{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "6cbf18a05c06090d867ef417a2a30b214d42d171"
            },
            {
              "fixed": "92c9f2ea634d92adff5403d231ebeda683c5685a"
            },
            {
              "fixed": "491aa3167ae02f219cb2d2de6f4196d28dca03be"
            },
            {
              "fixed": "0160953d8eec75c3c55562158c46442ff1fd410b"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.15.0"
            },
            {
              "fixed": "6.18.55"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98585.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\neth: fbnic: Avoid rounding zero ring sizes\n\nroundup_pow_of_two() is undefined for zero. ethtool permits a zero ring\nsize to reach the driver, where the minimum-size check should reject it.\n\nLeave zero unchanged while rounding nonzero ring sizes. The minimum-size\ncheck then rejects zero deterministically without changing the established\nbehavior for other values.",
  "id": "CVE-2026-98585",
  "modified": "2026-10-20T02:31:04.499176961Z",
  "published": "2026-10-18T15:18:58.018Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0160953d8eec75c3c55562158c46442ff1fd410b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/491aa3167ae02f219cb2d2de6f4196d28dca03be"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/92c9f2ea634d92adff5403d231ebeda683c5685a"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98585.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98585"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "eth: fbnic: Avoid rounding zero ring sizes"
}