{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "0655f6a8635b1b66f2434d5556b1044c14b1ccaf"
            },
            {
              "fixed": "b06fb5f78a9af0929aaa47c92d0b7bca0617fb25"
            },
            {
              "fixed": "52864c6c13dcc292481eabfeb3c31a86c3ec06f2"
            },
            {
              "fixed": "e87dcc1a644d087de0bb6c94c6dd28c29b89597f"
            },
            {
              "fixed": "9b937de4b3ded62a24da6e8d9d623cdb2748fa74"
            },
            {
              "fixed": "c9668a4adb2264625daeeabc7466b783badd4614"
            },
            {
              "fixed": "cebaefe1aceb650d5c99a4c0e1a4dde09e211818"
            },
            {
              "fixed": "56f0a2e0a1d004e025cd031c3a801ab73959269f"
            },
            {
              "fixed": "86b0c540e2ea397cde021eecd24145f7c16a3d4e"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.19.0"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74283.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: require net admin for TIPCv2 netlink mutators\n\nTIPCv2 registers mutating generic-netlink operations without admin\npermission flags. Generic netlink only checks CAP_NET_ADMIN when an\noperation sets GENL_ADMIN_PERM or GENL_UNS_ADMIN_PERM, so a local\nunprivileged process can currently change TIPC state through commands\nsuch as TIPC_NL_NET_SET, TIPC_NL_KEY_SET, TIPC_NL_KEY_FLUSH, and\nbearer enable/disable.\n\nThe legacy TIPC netlink API already checks netlink_net_capable(...,\nCAP_NET_ADMIN) for administrative commands. Give the TIPCv2 mutators\nthe equivalent generic-netlink gate. Use GENL_UNS_ADMIN_PERM, which\nmaps to the same namespace-aware CAP_NET_ADMIN check that\nnetlink_net_capable() performs, so the behaviour matches the legacy\npath and keeps working for CAP_NET_ADMIN holders in a non-initial user\nnamespace (containers).\n\nA QEMU/KASAN repro run as uid/gid 65534 with zero effective\ncapabilities previously succeeded in changing the network id and node\nidentity, setting and flushing key material, and enabling/disabling a\nUDP bearer. With this patch applied the same operations fail with\n-EPERM.",
  "id": "CVE-2026-74283",
  "modified": "2026-08-18T03:31:09.164673206Z",
  "published": "2026-08-15T05:57:52.667Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/52864c6c13dcc292481eabfeb3c31a86c3ec06f2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/56f0a2e0a1d004e025cd031c3a801ab73959269f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/86b0c540e2ea397cde021eecd24145f7c16a3d4e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9b937de4b3ded62a24da6e8d9d623cdb2748fa74"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b06fb5f78a9af0929aaa47c92d0b7bca0617fb25"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c9668a4adb2264625daeeabc7466b783badd4614"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cebaefe1aceb650d5c99a4c0e1a4dde09e211818"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e87dcc1a644d087de0bb6c94c6dd28c29b89597f"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74283.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74283"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "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": "tipc: require net admin for TIPCv2 netlink mutators"
}