{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "ac28634456867b23b95faccba7997a62ec430603"
            },
            {
              "fixed": "950d809f154dca04e5fbe5d3c8b9c5e44769cd57"
            },
            {
              "fixed": "a698ac8ab2561cf575d2d9f34095032651dd952e"
            },
            {
              "fixed": "19924bdd8a45ebc72a7b84c57fd63057d1dc75ac"
            },
            {
              "fixed": "1e5e20031c5eee8d2e490a90ff4d6a2feecfc3be"
            },
            {
              "fixed": "3823c27099cfe2482299065814adbaa771be9644"
            },
            {
              "fixed": "15d464265120ab9818bd673af301deee09bedab2"
            },
            {
              "fixed": "3fb0f5c0f64162a8c3f25616a4f1e340b921737f"
            },
            {
              "fixed": "e196115ec330a18de415bdb9f5071aa9f08e53ce"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.7.0"
            },
            {
              "fixed": "5.10.259"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.209"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.175"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.142"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.92"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.34"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52912.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_queue: hold bridge skb-\u003edev while queued\n\nbr_pass_frame_up() rewrites skb-\u003edev from the ingress port to the bridge\nmaster before queueing bridge LOCAL_IN packets. NFQUEUE only holds\nreferences on state.in/out and bridge physdevs, so a queued bridge\npacket can retain a freed bridge master in skb-\u003edev until reinjection.\n\nWhen the verdict is reinjected later, br_netif_receive_skb() re-enters\nthe receive path with skb-\u003edev still pointing at the freed bridge master,\ntriggering a use-after-free.\n\nStore skb-\u003edev in the queue entry, hold a reference on it for the queue\nlifetime, and use the saved device when dropping queued packets during\nNETDEV_DOWN handling.",
  "id": "CVE-2026-52912",
  "modified": "2026-08-12T03:51:26.409318277Z",
  "published": "2026-06-24T07:14:10.583Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/15d464265120ab9818bd673af301deee09bedab2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/19924bdd8a45ebc72a7b84c57fd63057d1dc75ac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1e5e20031c5eee8d2e490a90ff4d6a2feecfc3be"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3823c27099cfe2482299065814adbaa771be9644"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3fb0f5c0f64162a8c3f25616a4f1e340b921737f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/950d809f154dca04e5fbe5d3c8b9c5e44769cd57"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a698ac8ab2561cf575d2d9f34095032651dd952e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e196115ec330a18de415bdb9f5071aa9f08e53ce"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52912.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-52912"
    },
    {
      "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": "netfilter: nf_queue: hold bridge skb-\u003edev while queued"
}