{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "965b57b469a589d64d81b1688b38dcb537011bb0"
            },
            {
              "fixed": "263779a6beff03b8b06f6d25566cb0f45af361f2"
            },
            {
              "fixed": "1b585673a2249f13678e7ac443ac683ba767e0b6"
            },
            {
              "fixed": "90d35188aaa92b8f8b23f66335e0e91bf60103a3"
            },
            {
              "fixed": "6822eed69572000a181fa4e31fceacc60918c471"
            },
            {
              "fixed": "7d6d92d000ebe3a845a17c165c1d3a70c5d84fe1"
            },
            {
              "fixed": "3c94f241f776562c489876ff506f366224565c21"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.0.0"
            },
            {
              "fixed": "6.1.176"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.143"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.94"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.36"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53184.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nudp: clear skb-\u003edev before running a sockmap verdict\n\nOn the UDP receive path skb-\u003edev is repurposed as dev_scratch (the\ntruesize/state cache set by udp_set_dev_scratch()), through the\nunion { struct net_device *dev; unsigned long dev_scratch; } in sk_buff.\n\nWhen a UDP socket is in a sockmap, sk_data_ready is\nsk_psock_verdict_data_ready(), which calls udp_read_skb() -\u003e recv_actor()\n(sk_psock_verdict_recv) to run the attached SK_SKB verdict program in softirq.\nIf that program calls a socket-lookup helper (bpf_sk_lookup_tcp/udp,\nbpf_skc_lookup_tcp), bpf_skc_lookup() does:\n\n\tif (skb-\u003edev)\n\t\tcaller_net = dev_net(skb-\u003edev);\n\nskb-\u003edev still holds the dev_scratch value (a non-NULL integer), so dev_net()\ndereferences it as a struct net_device * and the kernel takes a general\nprotection fault on a non-canonical address in softirq:\n\n  Oops: general protection fault, probably for non-canonical address 0x1010000800004a0\n  CPU: 1 UID: 0 PID: 1406 Comm: syz.2.19 Not tainted 7.1.0-rc6 #1 PREEMPT(full)\n  RIP: 0010:bpf_skc_lookup net/core/filter.c:7033 [inline]\n  RIP: 0010:bpf_sk_lookup+0x45/0x160 net/core/filter.c:7047\n  Call Trace:\n   \u003cIRQ\u003e\n   bpf_prog_4675cb904b7071f8+0x12e/0x14e\n   bpf_prog_run_pin_on_cpu+0xc6/0x1f0\n   sk_psock_verdict_recv+0x1ba/0x350\n   udp_read_skb+0x31a/0x370\n   sk_psock_verdict_data_ready+0x2e3/0x600\n   __udp_enqueue_schedule_skb+0x4c8/0x650\n   udpv6_queue_rcv_one_skb+0x3ec/0x740\n   udp6_unicast_rcv_skb+0x11d/0x140\n   ip6_protocol_deliver_rcu+0x61e/0x950\n   ip6_input_finish+0xa9/0x150\n   NF_HOOK+0x286/0x2f0\n   ip6_input+0x117/0x220\n   NF_HOOK+0x286/0x2f0\n   __netif_receive_skb+0x85/0x200\n   process_backlog+0x374/0x9a0\n   __napi_poll+0x4f/0x1c0\n   net_rx_action+0x3b0/0x770\n   handle_softirqs+0x15a/0x460\n   do_softirq+0x57/0x80\n   \u003c/IRQ\u003e\n\nThe rmem charge that dev_scratch accounted for is released by skb_recv_udp() on\ndequeue, just above, so the scratch is dead by the time recv_actor() runs. Clear\nskb-\u003edev so bpf_skc_lookup() falls back to sock_net(skb-\u003esk), which\nskb_set_owner_sk_safe() set just above.",
  "id": "CVE-2026-53184",
  "modified": "2026-07-08T05:36:38.165861015Z",
  "published": "2026-06-25T08:38:58.189Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1b585673a2249f13678e7ac443ac683ba767e0b6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/263779a6beff03b8b06f6d25566cb0f45af361f2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3c94f241f776562c489876ff506f366224565c21"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6822eed69572000a181fa4e31fceacc60918c471"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7d6d92d000ebe3a845a17c165c1d3a70c5d84fe1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/90d35188aaa92b8f8b23f66335e0e91bf60103a3"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53184.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53184"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "udp: clear skb-\u003edev before running a sockmap verdict"
}