{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "0efac27791ee068075d80f07c55a229b1335ce12"
            },
            {
              "fixed": "8d03e65eb6cfbffec471a6b65416f93679bf3286"
            },
            {
              "fixed": "f979971835dddbca86cf99e3b2e2b94a408a1ab2"
            },
            {
              "fixed": "3f52a86a482a69294c50a5a2a097bd6f4104990a"
            },
            {
              "fixed": "d30aac0fa00ca0afc3e08174cf7f974a66bdcf05"
            },
            {
              "fixed": "d68eab61944a9b0826fa2e954e42db1aa3201b7a"
            },
            {
              "fixed": "e27c17346628cb56843a83f93ac63c314c00f388"
            },
            {
              "fixed": "18a84c35842e19cd3c5534d8cee73d31863f696d"
            },
            {
              "fixed": "3bcf7aec6a9d16438f2cec29f5d7c8d5b8edf9b2"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.20.0"
            },
            {
              "fixed": "5.10.259"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.210"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.176"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.143"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.94"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.36"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46320.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntap: free page on error paths in tap_get_user_xdp()\n\ntap_get_user_xdp() rejects a frame shorter than ETH_HLEN with -EINVAL,\nand returns -ENOMEM when build_skb() fails. Both paths jump to the err\nlabel without freeing the page that vhost_net_build_xdp() allocated for\nthe frame. tap_sendmsg() discards the per-buffer return value and always\nreturns 0, so vhost_tx_batch() takes the success path and never frees\nthe page; each rejected frame in a batch leaks one page-frag chunk.\n\nFree the page on both error paths, before the skb is built. This is the\ntap counterpart of the same leak in tun_xdp_one().",
  "id": "CVE-2026-46320",
  "modified": "2026-07-10T03:54:23.485962284Z",
  "published": "2026-06-09T12:11:12.882Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/18a84c35842e19cd3c5534d8cee73d31863f696d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3bcf7aec6a9d16438f2cec29f5d7c8d5b8edf9b2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3f52a86a482a69294c50a5a2a097bd6f4104990a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8d03e65eb6cfbffec471a6b65416f93679bf3286"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d30aac0fa00ca0afc3e08174cf7f974a66bdcf05"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d68eab61944a9b0826fa2e954e42db1aa3201b7a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e27c17346628cb56843a83f93ac63c314c00f388"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f979971835dddbca86cf99e3b2e2b94a408a1ab2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46320.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46320"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "tap: free page on error paths in tap_get_user_xdp()"
}