{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "a6efc273ab8245722eee2150fa12cf75781dc410"
            },
            {
              "fixed": "bf26ad92ffda7884825d67b46bd5efe615c3babf"
            },
            {
              "fixed": "a6bd339dbb3514bce690fdcf252e788dfab4ee76"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53079.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet_sched: fix skb memory leak in deferred qdisc drops\n\nWhen the network stack cleans up the deferred list via qdisc_run_end(),\nit operates on the root qdisc. If the root qdisc do not implement the\nTCQ_F_DEQUEUE_DROPS flag the packets queue to free are never freed and\ngets stranded on the child's local to_free list.\n\nFix this by making qdisc_dequeue_drop() aware of the root qdisc. It\nfetches the root qdisc and check for the TCQ_F_DEQUEUE_DROPS flag. If\nthe flag is present, the packet is appended directly to the root's\nto_free list. Otherwise, drop it directly as it was done before the\noptimization was implemented.",
  "id": "CVE-2026-53079",
  "modified": "2026-08-12T03:51:38.906343627Z",
  "published": "2026-06-24T16:30:20.163Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a6bd339dbb3514bce690fdcf252e788dfab4ee76"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bf26ad92ffda7884825d67b46bd5efe615c3babf"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53079.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53079"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "net_sched: fix skb memory leak in deferred qdisc drops"
}