{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "83ff59a066637a6c28844bbf43009459408240f4"
            },
            {
              "fixed": "83c978921688af40dcab6db74882d1ff9b0b765c"
            },
            {
              "fixed": "6b92e66ec6dd8019e8efb2a568ef7c967c5a18c5"
            },
            {
              "fixed": "4417ab6ecad01cf2d01045ef8104c95a66b0e893"
            },
            {
              "fixed": "552e565ed8846e7db143e4a6bdf3f5677453c686"
            },
            {
              "fixed": "9754f049d5f1945d4c691d1f52824eb8daf8f9be"
            },
            {
              "fixed": "e3f7e58189bc222971ddc860f1716f37e51ba996"
            },
            {
              "fixed": "87b3da4acb860605643ebee312178f13b20744cf"
            },
            {
              "fixed": "5b0a6b554e12a97f9771a9a9f4ea1f5457373c73"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.11.0"
            },
            {
              "fixed": "5.10.270"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "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-2026-90216.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nubi: Fix rollback for explicit UBI device numbers\n\nubi_init_attach() rolls back module initialization failures by scanning\nubi_devices[0..i-1], where i is the mtd= parameter index. That assumes\nthe parameter index matches the UBI device number.\n\nThat assumption is not true when mtd= specifies an explicit ubi_num. A\nsuccessfully attached device can be stored at a higher ubi_devices[]\nslot, and a later failure can miss it during rollback.\n\nScan the full ubi_devices[] array and detach by the actual array index,\nmatching the way UBI devices are stored.",
  "id": "CVE-2026-90216",
  "modified": "2026-09-18T03:30:22.485526585Z",
  "published": "2026-09-17T16:07:28.730Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4417ab6ecad01cf2d01045ef8104c95a66b0e893"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/552e565ed8846e7db143e4a6bdf3f5677453c686"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5b0a6b554e12a97f9771a9a9f4ea1f5457373c73"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6b92e66ec6dd8019e8efb2a568ef7c967c5a18c5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/83c978921688af40dcab6db74882d1ff9b0b765c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/87b3da4acb860605643ebee312178f13b20744cf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9754f049d5f1945d4c691d1f52824eb8daf8f9be"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e3f7e58189bc222971ddc860f1716f37e51ba996"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90216.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90216"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "ubi: Fix rollback for explicit UBI device numbers"
}