{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "fb9f98e1041a30dd5766620a2a64cb472b54caa9"
            },
            {
              "fixed": "c4152b4e28b3e550ec99351bf900e2c24c2608cc"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "3b194343c25084a8d2fa0c0f2c9e80f3080fd732"
            },
            {
              "fixed": "7ae590797f9b5c240aaea5773f5f00977a42a846"
            },
            {
              "fixed": "5b05aa36ee24297d7296ca58dfd8c448d0e4cda3"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.18.33"
            },
            {
              "fixed": "6.18.35"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.18.35"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63972.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mana: Skip redundant detach on already-detached port\n\nWhen mana_per_port_queue_reset_work_handler() runs after a previous\ndetach succeeded but attach failed, the port is left in a detached\nstate with apc-\u003etx_qp and apc-\u003erxqs already freed. Calling\nmana_detach() again unconditionally leads to NULL pointer dereferences\nduring queue teardown.\n\nAdd an early exit in mana_detach() when the port is already in\ndetached state (!netif_device_present) for non-close callers, making\nit safe to call idempotently. This allows the queue reset handler and\nother recovery paths to simply retry mana_attach() without redundant\nteardown.",
  "id": "CVE-2026-63972",
  "modified": "2026-08-12T03:51:27.238150724Z",
  "published": "2026-07-19T14:55:58.503Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5b05aa36ee24297d7296ca58dfd8c448d0e4cda3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ae590797f9b5c240aaea5773f5f00977a42a846"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c4152b4e28b3e550ec99351bf900e2c24c2608cc"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63972.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63972"
    },
    {
      "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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "net: mana: Skip redundant detach on already-detached port"
}