{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.113-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.2.10-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  pfcp: fix socket lifetime on netdevice registration failure  pfcp_newlink() creates the UDP socket before register_netdevice(). If registration fails after pfcp_dev_init() succeeds, the core calls pfcp_dev_uninit(), which releases the socket and clears pfcp-\u003esk. The newlink error path then releases it again, causing a NULL pointer dereference. This was observed with failslab fault injection:    FAULT_INJECTION: forcing a failure.   kobject: kobject_add_internal failed for pfcp0 (error: -12 parent: net)   BUG: KASAN: null-ptr-deref in udp_tunnel_sock_release+0x1c/0x50   Read of size 8 at addr 0000000000000120 by task ip/1037   Call trace:    show_stack+0x18/0x24 (C)    dump_stack_lvl+0x78/0x90    print_report+0x468/0x5cc    kasan_report+0xa4/0xf0    __asan_load8+0x7c/0xd0    udp_tunnel_sock_release+0x1c/0x50    pfcp_newlink+0x128/0x184    rtnl_newlink+0x848/0xe44    rtnetlink_rcv_msg+0x468/0x514    netlink_rcv_skb+0xc0/0x1f0    rtnetlink_rcv+0x18/0x24    netlink_unicast+0x4b8/0x558    netlink_sendmsg+0x2b8/0x584    ...  Return from pfcp_del_sock() if pfcp-\u003esk is NULL.",
  "id": "DEBIAN-CVE-2026-98849",
  "modified": "2026-10-19T04:47:36.114489377Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-98849"
    }
  ],
  "upstream": [
    "CVE-2026-98849"
  ]
}