{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88"
            },
            {
              "fixed": "27856d533eca3804008695f61c1e4d5ff984196b"
            },
            {
              "fixed": "b6b22824b30e48ce1df3a2e80990f4b8505deb50"
            },
            {
              "fixed": "6bba24e9ebe6f1c0b356cd471e36bdc7fa434897"
            },
            {
              "fixed": "3b249988d774dacf13b203817e971934a42243c4"
            },
            {
              "fixed": "72158ea185b27afae163949b0e86164cb6b64e55"
            },
            {
              "fixed": "cfd62907f3cdbc3b6da8f49ba907c0390018fe5e"
            },
            {
              "fixed": "67a35e7da7ef9d2f000aa758552a128324c604a0"
            },
            {
              "fixed": "06937db21ee311ed07eba47954447245041a982d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "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"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64056.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: cortina: Make RX SKB per-port\n\nThe SKB used to assemble packets from fragments in gmac_rx()\nis static local, but the Gemini has two ethernet ports, meaning\nthere can be races between the ports on a bad day if a device\nis using both.\n\nMake the RX SKB a per-port variable and carry it over between\ninvocations in the port struct instead.\n\nZero the pointer once we call napi_gro_frags(), on error (after\ncalling napi_free_frags()) or if the port is stopped.\n\nZero it in some place where not strictly necessary just to\nemphasize what is going on.\n\nThis was found by Sashiko during normal patch review.",
  "id": "CVE-2026-64056",
  "modified": "2026-07-22T05:30:02.421431589Z",
  "published": "2026-07-19T15:39:37.673Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/06937db21ee311ed07eba47954447245041a982d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/27856d533eca3804008695f61c1e4d5ff984196b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3b249988d774dacf13b203817e971934a42243c4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/67a35e7da7ef9d2f000aa758552a128324c604a0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6bba24e9ebe6f1c0b356cd471e36bdc7fa434897"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/72158ea185b27afae163949b0e86164cb6b64e55"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b6b22824b30e48ce1df3a2e80990f4b8505deb50"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cfd62907f3cdbc3b6da8f49ba907c0390018fe5e"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64056.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64056"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "net: ethernet: cortina: Make RX SKB per-port"
}