{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "7e84c961b2eb062d2f47037dcca52dcd1d3615b5"
            },
            {
              "fixed": "87812858c4c8df979cb70bcd0040b925a543df6f"
            },
            {
              "fixed": "e065960366b55ab21e6c643c30dec2a41451900b"
            },
            {
              "fixed": "851c5e9a829d56cb0982965f07ef8966a6722884"
            },
            {
              "fixed": "31dd710cd84d5dd63c49f640d3a9f36c9699ca95"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.9.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90215.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: ubi: Release device reference on busy detach\n\nubi_detach_mtd_dev() obtains a device reference through ubi_get_device()\nbefore checking whether the UBI device is busy. The busy return path drops\nubi-\u003eref_count but leaves the device reference held, so the device object\ncannot be released after a later detach.\n\nDrop the device reference before returning -EBUSY.",
  "id": "CVE-2026-90215",
  "modified": "2026-09-19T03:30:54.790517702Z",
  "published": "2026-09-17T16:07:28.071Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/31dd710cd84d5dd63c49f640d3a9f36c9699ca95"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/851c5e9a829d56cb0982965f07ef8966a6722884"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/87812858c4c8df979cb70bcd0040b925a543df6f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e065960366b55ab21e6c643c30dec2a41451900b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90215.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90215"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "mtd: ubi: Release device reference on busy detach"
}