{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.1.176-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.94-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.0.10-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  bareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst()  bareudp_fill_metadata_dst() passes bareudp-\u003esock to udp_tunnel6_dst_lookup() in the IPv6 path without a NULL check. The socket is only created in bareudp_open() and NULLed in bareudp_stop(), so calling this function while the device is down triggers a NULL dereference via sock-\u003esk.   BUG: kernel NULL pointer dereference, address: 0000000000000018  RIP: 0010:udp_tunnel6_dst_lookup (net/ipv6/ip6_udp_tunnel.c:160)  Call Trace:   \u003cTASK\u003e   bareudp_fill_metadata_dst (drivers/net/bareudp.c:532)   do_execute_actions (net/openvswitch/actions.c:901)   ovs_execute_actions (net/openvswitch/actions.c:1589)   ovs_packet_cmd_execute (net/openvswitch/datapath.c:700)   genl_family_rcv_msg_doit (net/netlink/genetlink.c:1114)   genl_rcv_msg (net/netlink/genetlink.c:1209)   netlink_rcv_skb (net/netlink/af_netlink.c:2550)   \u003c/TASK\u003e  Add a NULL check returning -ESHUTDOWN, consistent with the xmit paths in the same driver.",
  "id": "DEBIAN-CVE-2026-45846",
  "modified": "2026-09-14T16:47:49.195244323Z",
  "published": "2026-05-27T11:16:24.083Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-45846"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-45846"
  ]
}