{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "122ff243f5f104194750ecbc76d5946dd1eec934"
            },
            {
              "fixed": "ecf45080a4d3f4526cacb8b14060fe3b49a6913b"
            },
            {
              "fixed": "a0ffc6081a8b27082dd5eae5aa1e3f59bbecf06c"
            },
            {
              "fixed": "5b23a2ff379e70b6b9ff744a972b63e1f8f4d996"
            },
            {
              "fixed": "8e59d4d0dcde2dfb07a7ef855c849a2a0560aa57"
            },
            {
              "fixed": "6512c57c4638ddec113bf42439361ba85a12048d"
            },
            {
              "fixed": "a7f4eefb6e1458431eef9fa20fb363320d185f76"
            },
            {
              "fixed": "155f90be5ee8be5b110ebc0b7da33c54c83b0208"
            },
            {
              "fixed": "87a1e0fe7776da7ab411be332b4be58ac8840d10"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.16.0"
            },
            {
              "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": "6.12.93"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.35"
            }
          ],
          "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/2026/64xxx/CVE-2026-64002.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: free net-\u003eipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()\n\nipv4_sysctl_exit_net() is currently freeing net-\u003eipv4.sysctl_local_reserved_ports\ntoo soon.\n\nOnly after unregister_net_sysctl_table() we can be sure no threads can possibly\nuse the sysctls, including /proc/sys/net/ipv4/ip_local_reserved_ports.",
  "id": "CVE-2026-64002",
  "modified": "2026-07-22T05:29:37.421536719Z",
  "published": "2026-07-19T14:56:19.495Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/155f90be5ee8be5b110ebc0b7da33c54c83b0208"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5b23a2ff379e70b6b9ff744a972b63e1f8f4d996"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6512c57c4638ddec113bf42439361ba85a12048d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/87a1e0fe7776da7ab411be332b4be58ac8840d10"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8e59d4d0dcde2dfb07a7ef855c849a2a0560aa57"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a0ffc6081a8b27082dd5eae5aa1e3f59bbecf06c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a7f4eefb6e1458431eef9fa20fb363320d185f76"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ecf45080a4d3f4526cacb8b14060fe3b49a6913b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64002.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64002"
    },
    {
      "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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ipv4: free net-\u003eipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()"
}