{
  "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": "6.12.111-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "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:  net/sched: sfq: clamp quantum in change path  sfq_change() accepts any non-negative quantum (only rejects (int)ctl-\u003equantum \u003c 0). With a crafted size table qdisc_pkt_len reaches ~2 GiB, so quantum=1 makes the deficit-refill loop spin ~2^31 times under the qdisc lock (a soft lockup / denial of service).  Add max(256U, ...) matching fq_codel_change(). Reject quantum \u003e 1\u003c\u003c20 with -EINVAL, matching fq_codel_change() and the init clamp.  Conditions to recreate the bug:   CONFIG_NET_SCH_SFQ=y. Requires CAP_NET_ADMIN (namespace-local via   unshare -Urn suffices).    tc qdisc add dev dummy0 root sfq   tc qdisc change dev dummy0 root sfq quantum 1 stab data 32768 size_log 15 cell_log 0",
  "id": "DEBIAN-CVE-2026-98012",
  "modified": "2026-09-29T10:47:37.075896910Z",
  "published": "2026-09-25T11:17:29.537Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-98012"
    }
  ],
  "upstream": [
    "CVE-2026-98012"
  ]
}