{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  sched_ext: Don't BUG_ON a destroyed DSQ in process_deferred_reenq_users  scx_bpf_dsq_reenq() queues a deferred reenq (dru) that runs from run_deferred(), not ops.dispatch(). If the DSQ is destroyed before the dru runs, process_deferred_reenq_users() sees dsq-\u003eid == SCX_DSQ_INVALID and hits the BUG_ON. destroy_dsq() doesn't flush pending drus, so just skip.  tj: Read dsq-\u003eid once with READ_ONCE(). Reading it separately in the INVALID     check and the BUG_ON would leave a window where destroy_dsq() can     invalidate the id between the two reads and still trigger the BUG_ON.",
  "id": "DEBIAN-CVE-2026-89516",
  "modified": "2026-09-12T08:47:26.865606014Z",
  "published": "2026-09-11T20:19:34.170Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-89516"
    }
  ],
  "upstream": [
    "CVE-2026-89516"
  ]
}