{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "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:  Bluetooth: ISO: Fix data-race on iso_pi fields in hci_get_route calls  iso_connect_bis(), iso_connect_cis(), iso_listen_bis(), and iso_conn_big_sync() call hci_get_route() using iso_pi(sk)-\u003edst, iso_pi(sk)-\u003esrc, and iso_pi(sk)-\u003esrc_type without holding lock_sock().  These fields may be modified concurrently by connect() or setsockopt() on the same socket, resulting in data-races reported by KCSAN.  Fix this by snapshotting the required fields under lock_sock() before calling hci_get_route().  BUG: KCSAN: data-race in memcmp+0x45/0xb0  race at unknown origin, with read to 0xffff8880122135cf of 1 bytes by task 333 on cpu 1:  memcmp+0x45/0xb0  hci_get_route+0x27e/0x490  iso_connect_cis+0x4c/0xa10  iso_sock_connect+0x60e/0xb30  __sys_connect_file+0xbd/0xe0  __sys_connect+0xe0/0x110  __x64_sys_connect+0x40/0x50  x64_sys_call+0xcad/0x1c60  do_syscall_64+0x133/0x590  entry_SYSCALL_64_after_hwframe+0x77/0x7f",
  "id": "DEBIAN-CVE-2026-63871",
  "modified": "2026-09-14T16:47:42.413446137Z",
  "published": "2026-07-19T15:16:54.133Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-63871"
    }
  ],
  "upstream": [
    "CVE-2026-63871"
  ]
}