{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "77be155cba4e163e8bba9fd27222a8b6189ec4f7"
            },
            {
              "fixed": "3e5fd9d14f2d228e7260251f2e4a1d41ba8f705a"
            },
            {
              "fixed": "eb1a9637f0bd84b5db8803af65dfb1f44785406f"
            },
            {
              "fixed": "7a5a1582710981ef6637de9f074a60a5b1d63222"
            },
            {
              "fixed": "86a61e46a1919e8abf4d227c204773dabb24068a"
            },
            {
              "fixed": "1b9cc255e8089606b92b2adf504e334573682821"
            },
            {
              "fixed": "5889064919a1e5c0a9469c54895000414fc46944"
            },
            {
              "fixed": "fffeb2ab5eeb823d4c2330571a098f63237c9049"
            },
            {
              "fixed": "54f6b0c843e228d499eb4b6bbb89df68cad9ad5d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.29"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72036.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: sch_multiq: Replace direct dequeue call with peek and qdisc_dequeue_peeked\n\nmultiq_dequeue() takes a packet from a band's child with a direct\n-\u003edequeue() call after multiq_peek() peeked it. When the child is\nnon-work-conserving the peek stashes the skb in the child's gso_skb, so\nthe direct dequeue returns a different skb and orphans the stash,\ndesyncing the child's qlen/backlog. With a qfq child reached through a\npeeking parent (e.g. tbf) this re-enters the child on an emptied list and\ndereferences NULL, panicking the kernel from softirq on ordinary egress.\n\nTake the packet through qdisc_dequeue_peeked(), as sch_prio already does\nand as sch_red and sch_sfb were just fixed to do. The helper is a no-op\nwhen the child has no stash, so a work-conserving child is unaffected.",
  "id": "CVE-2026-72036",
  "modified": "2026-08-18T03:30:55.631543373Z",
  "published": "2026-08-15T05:51:57.012Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1b9cc255e8089606b92b2adf504e334573682821"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3e5fd9d14f2d228e7260251f2e4a1d41ba8f705a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/54f6b0c843e228d499eb4b6bbb89df68cad9ad5d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5889064919a1e5c0a9469c54895000414fc46944"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7a5a1582710981ef6637de9f074a60a5b1d63222"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/86a61e46a1919e8abf4d227c204773dabb24068a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eb1a9637f0bd84b5db8803af65dfb1f44785406f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fffeb2ab5eeb823d4c2330571a098f63237c9049"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72036.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72036"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "net/sched: sch_multiq: Replace direct dequeue call with peek and qdisc_dequeue_peeked"
}