net: ethernet: cortina: Make RX SKB per-port

{
  "id": "b2218730d4f95508fd7f82adee0a9825d0409da61ced0246a2ea24bc1c4f1a68",
  "url": "https://osv.dev/vulnerability/CVE-2026-64056",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "net: ethernet: cortina: Make RX SKB per-port",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: net: ethernet: cortina: Make RX SKB per-port The SKB used to assemble packets from fragments in gmac_rx() is static local, but the Gemini has two ethernet ports, meaning there can be races between the ports on a bad day if a device is using both. Make the RX SKB a per-port variable and carry it over between invocations in the port struct instead. Zero the pointer once we call napi_gro_frags(), on error (after calling napi_free_frags()) or if the port is stopped. Zero it in some place where not strictly necessary just to emphasize what is going on. This was found by Sashiko during normal patch review.",
    "evidence": "osv:CVE-2026-64056",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.258",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.209",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.175",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.142",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.92",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.34",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.0.11",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-64056",
      "aliases": [
        "CVE-2026-64056"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88"
                },
                {
                  "fixed": "27856d533eca3804008695f61c1e4d5ff984196b"
                },
                {
                  "fixed": "b6b22824b30e48ce1df3a2e80990f4b8505deb50"
                },
                {
                  "fixed": "6bba24e9ebe6f1c0b356cd471e36bdc7fa434897"
                },
                {
                  "fixed": "3b249988d774dacf13b203817e971934a42243c4"
                },
                {
                  "fixed": "72158ea185b27afae163949b0e86164cb6b64e55"
                },
                {
                  "fixed": "cfd62907f3cdbc3b6da8f49ba907c0390018fe5e"
                },
                {
                  "fixed": "67a35e7da7ef9d2f000aa758552a128324c604a0"
                },
                {
                  "fixed": "06937db21ee311ed07eba47954447245041a982d"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64056.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.16.0"
                },
                {
                  "fixed": "5.10.258"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.209"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.175"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.142"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.92"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.34"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.0.11"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64056.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.604721419Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/06937db21ee311ed07eba47954447245041a982d",
        "https://git.kernel.org/stable/c/27856d533eca3804008695f61c1e4d5ff984196b",
        "https://git.kernel.org/stable/c/3b249988d774dacf13b203817e971934a42243c4",
        "https://git.kernel.org/stable/c/67a35e7da7ef9d2f000aa758552a128324c604a0",
        "https://git.kernel.org/stable/c/6bba24e9ebe6f1c0b356cd471e36bdc7fa434897",
        "https://git.kernel.org/stable/c/72158ea185b27afae163949b0e86164cb6b64e55",
        "https://git.kernel.org/stable/c/b6b22824b30e48ce1df3a2e80990f4b8505deb50",
        "https://git.kernel.org/stable/c/cfd62907f3cdbc3b6da8f49ba907c0390018fe5e",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64056.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-64056",
        "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/2026/64xxx/CVE-2026-64056.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-64056",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 504525,
  "published_at": "2026-07-19T15:39:37.673+00:00"
}