{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "571912c69f0ed731bd1e071ade9dc7ca4aa52065"
            },
            {
              "fixed": "31e010a106ff6cd8ccac4bfee547fd3fa1015574"
            },
            {
              "fixed": "55193df8d6d33318435f19572bf5ea47a22eee28"
            },
            {
              "fixed": "51eef9c072aa3405a6823a96ae666d38a3b48750"
            },
            {
              "fixed": "a0f4e4e8e0f5e24ddd83e3d1221732621cf34636"
            },
            {
              "fixed": "35a115a204be08f97450b0389413e218268ef4a2"
            },
            {
              "fixed": "74a02921c48fcd35a7881956c9e5c52b86595f5d"
            },
            {
              "fixed": "638905520fc4fae6a80991563f264131545ba3df"
            },
            {
              "fixed": "aa6c6d9ee064aabfede4402fd1283424e649ca19"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.7.0"
            },
            {
              "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": "6.6.141"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.91"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.33"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45846.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst()\n\nbareudp_fill_metadata_dst() passes bareudp-\u003esock to\nudp_tunnel6_dst_lookup() in the IPv6 path without a NULL check.\nThe socket is only created in bareudp_open() and NULLed in\nbareudp_stop(), so calling this function while the device is down\ntriggers a NULL dereference via sock-\u003esk.\n\n BUG: kernel NULL pointer dereference, address: 0000000000000018\n RIP: 0010:udp_tunnel6_dst_lookup (net/ipv6/ip6_udp_tunnel.c:160)\n Call Trace:\n  \u003cTASK\u003e\n  bareudp_fill_metadata_dst (drivers/net/bareudp.c:532)\n  do_execute_actions (net/openvswitch/actions.c:901)\n  ovs_execute_actions (net/openvswitch/actions.c:1589)\n  ovs_packet_cmd_execute (net/openvswitch/datapath.c:700)\n  genl_family_rcv_msg_doit (net/netlink/genetlink.c:1114)\n  genl_rcv_msg (net/netlink/genetlink.c:1209)\n  netlink_rcv_skb (net/netlink/af_netlink.c:2550)\n  \u003c/TASK\u003e\n\nAdd a NULL check returning -ESHUTDOWN, consistent with the xmit paths\nin the same driver.",
  "id": "CVE-2026-45846",
  "modified": "2026-07-15T01:49:20.633044045Z",
  "published": "2026-05-27T09:24:52.122Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/31e010a106ff6cd8ccac4bfee547fd3fa1015574"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/35a115a204be08f97450b0389413e218268ef4a2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/51eef9c072aa3405a6823a96ae666d38a3b48750"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/55193df8d6d33318435f19572bf5ea47a22eee28"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/638905520fc4fae6a80991563f264131545ba3df"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/74a02921c48fcd35a7881956c9e5c52b86595f5d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a0f4e4e8e0f5e24ddd83e3d1221732621cf34636"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aa6c6d9ee064aabfede4402fd1283424e649ca19"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45846.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45846"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "bareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst()"
}