{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "8b645922b22303cec4628dbbbf6c8553d1cdec87"
            },
            {
              "fixed": "79dbedf40ad930f83839e564394dc5d1a54938c6"
            },
            {
              "fixed": "4beda67ee72e0c8df5b49951dd8b96f6adb25e02"
            },
            {
              "fixed": "a15c2acd3083461f91725760e59dff88b33c28f6"
            },
            {
              "fixed": "9ea5dfb2bfef4f8a7e704d1921d8a790cb7fb700"
            },
            {
              "fixed": "0f6bffb5008f0cba9cad5ded2caccc64466a6e54"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.6.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.109"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.50"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89735.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: midi2: remove default configfs groups on teardown\n\nf_midi2_alloc_inst() creates default configfs child groups for the\ndefault endpoint and default block using configfs_add_default_group(),\nsetting their internal refcount to 1.\n\nHowever, during function teardown in f_midi2_free_inst() or EP cleanup\nin f_midi2_ep_opts_release(), configfs_remove_default_groups() is\nnever called, therefore never dropping the refcount and leaking struct\nf_midi2_ep_opts and f_midi2_block_opts.\n\nAdd the missing configfs_remove_default_groups() in the afformentioned\nfunctions to free the structs properly.",
  "id": "CVE-2026-89735",
  "modified": "2026-09-16T03:30:44.641402375Z",
  "published": "2026-09-11T19:46:43.899Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0f6bffb5008f0cba9cad5ded2caccc64466a6e54"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4beda67ee72e0c8df5b49951dd8b96f6adb25e02"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/79dbedf40ad930f83839e564394dc5d1a54938c6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9ea5dfb2bfef4f8a7e704d1921d8a790cb7fb700"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a15c2acd3083461f91725760e59dff88b33c28f6"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89735.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89735"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "usb: gadget: midi2: remove default configfs groups on teardown"
}