{
  "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": "7.0.13-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  udp: clear skb-\u003edev before running a sockmap verdict  On the UDP receive path skb-\u003edev is repurposed as dev_scratch (the truesize/state cache set by udp_set_dev_scratch()), through the union { struct net_device *dev; unsigned long dev_scratch; } in sk_buff.  When a UDP socket is in a sockmap, sk_data_ready is sk_psock_verdict_data_ready(), which calls udp_read_skb() -\u003e recv_actor() (sk_psock_verdict_recv) to run the attached SK_SKB verdict program in softirq. If that program calls a socket-lookup helper (bpf_sk_lookup_tcp/udp, bpf_skc_lookup_tcp), bpf_skc_lookup() does:  \tif (skb-\u003edev) \t\tcaller_net = dev_net(skb-\u003edev);  skb-\u003edev still holds the dev_scratch value (a non-NULL integer), so dev_net() dereferences it as a struct net_device * and the kernel takes a general protection fault on a non-canonical address in softirq:    Oops: general protection fault, probably for non-canonical address 0x1010000800004a0   CPU: 1 UID: 0 PID: 1406 Comm: syz.2.19 Not tainted 7.1.0-rc6 #1 PREEMPT(full)   RIP: 0010:bpf_skc_lookup net/core/filter.c:7033 [inline]   RIP: 0010:bpf_sk_lookup+0x45/0x160 net/core/filter.c:7047   Call Trace:    \u003cIRQ\u003e    bpf_prog_4675cb904b7071f8+0x12e/0x14e    bpf_prog_run_pin_on_cpu+0xc6/0x1f0    sk_psock_verdict_recv+0x1ba/0x350    udp_read_skb+0x31a/0x370    sk_psock_verdict_data_ready+0x2e3/0x600    __udp_enqueue_schedule_skb+0x4c8/0x650    udpv6_queue_rcv_one_skb+0x3ec/0x740    udp6_unicast_rcv_skb+0x11d/0x140    ip6_protocol_deliver_rcu+0x61e/0x950    ip6_input_finish+0xa9/0x150    NF_HOOK+0x286/0x2f0    ip6_input+0x117/0x220    NF_HOOK+0x286/0x2f0    __netif_receive_skb+0x85/0x200    process_backlog+0x374/0x9a0    __napi_poll+0x4f/0x1c0    net_rx_action+0x3b0/0x770    handle_softirqs+0x15a/0x460    do_softirq+0x57/0x80    \u003c/IRQ\u003e  The rmem charge that dev_scratch accounted for is released by skb_recv_udp() on dequeue, just above, so the scratch is dead by the time recv_actor() runs. Clear skb-\u003edev so bpf_skc_lookup() falls back to sock_net(skb-\u003esk), which skb_set_owner_sk_safe() set just above.",
  "id": "DEBIAN-CVE-2026-53184",
  "modified": "2026-09-14T16:47:41.421727646Z",
  "published": "2026-06-25T09:16:35.800Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-53184"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-53184"
  ]
}