net: systemport: Fix buffer overflow in bcm_sysport_get_stats()

{
  "id": "636fbbf9fcd84e1a4ab4af27920b8570c26ec1cf2ef34a55fd29afbaa9b8ff31",
  "url": "https://osv.dev/vulnerability/CVE-2026-98808",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "net: systemport: Fix buffer overflow in bcm_sysport_get_stats()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: net: systemport: Fix buffer overflow in bcm_sysport_get_stats() When running on SYSTEMPORT Lite, certain statistics are unsupported and skipped during bcm_sysport_get_stats(). The variable 'j' tracks the compacted index into the destination data buffer, whereas 'i' iterates over all elements in bcm_sysport_gstrings_stats. Because the buffer allocated by ethtool is sized only according to bcm_sysport_get_sset_count(), storing values at data[i] instead of data[j] writes past the allocated array bounds, leading to memory corruption. Fix this by writing to data[j] instead of data[i].",
    "evidence": "osv:CVE-2026-98808",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.6.160",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.113",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.56",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.10",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-98808",
      "aliases": [
        "CVE-2026-98808"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "10377ba7673d19e28d92846955d51f49acd25c35"
                },
                {
                  "fixed": "96a2b042051553df0d9f03b518dd3b7105b36935"
                },
                {
                  "fixed": "29d1d35ad5ad379a904263ea1cd4ba1d71cd965f"
                },
                {
                  "fixed": "96d8b26be5bc451188acdcee055948da45adbde0"
                },
                {
                  "fixed": "faba9fdde480356f4a1d3b1a5713b7b354858a1c"
                },
                {
                  "fixed": "eb7b84af0ec5c71b4920e999611b466b3784496c"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98808.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.14.0"
                },
                {
                  "fixed": "6.6.160"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.113"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.56"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.2.10"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98808.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:21.633266661Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/29d1d35ad5ad379a904263ea1cd4ba1d71cd965f",
        "https://git.kernel.org/stable/c/96a2b042051553df0d9f03b518dd3b7105b36935",
        "https://git.kernel.org/stable/c/96d8b26be5bc451188acdcee055948da45adbde0",
        "https://git.kernel.org/stable/c/eb7b84af0ec5c71b4920e999611b466b3784496c",
        "https://git.kernel.org/stable/c/faba9fdde480356f4a1d3b1a5713b7b354858a1c",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98808.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-98808",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98808.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-98808",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 487857,
  "published_at": "2026-10-18T15:48:55.053+00:00"
}