md/bitmap: resume array on backlog_store() error path

{
  "id": "8e43f108be053fe50f787489cd93bd9af2d5fb779c3b3ce462ae34b4d4f14bd3",
  "url": "https://osv.dev/vulnerability/CVE-2026-90390",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "md/bitmap: resume array on backlog_store() error path",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: md/bitmap: resume array on backlog_store() error path backlog_store() suspends the array before checking whether a write-mostly device exists. If no such device exists, the error path only unlocks reconfig_mutex and leaves the array suspended, blocking subsequent I/O. Use mddev_unlock_and_resume() to release both states.",
    "evidence": "osv:CVE-2026-90390",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.12.110",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.52",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-90390",
      "aliases": [
        "CVE-2026-90390"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "58226942ad3d1423785f815ede5bcc832574f2ea"
                },
                {
                  "fixed": "03aad318f0a1f039dddf98739e705fdca3bf0d86"
                },
                {
                  "fixed": "6763fb409a0b4106676a52cf934440d9484b32c8"
                },
                {
                  "fixed": "cc543e769b97d563b089b9e0ebf8ad361d15076f"
                },
                {
                  "fixed": "2911cd0a0f4366a7e06832bc5f0a7fdcc138e4dc"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90390.json"
          }
        },
        {
          "ranges": [
            {
              "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"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90390.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:23.397327117Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/03aad318f0a1f039dddf98739e705fdca3bf0d86",
        "https://git.kernel.org/stable/c/2911cd0a0f4366a7e06832bc5f0a7fdcc138e4dc",
        "https://git.kernel.org/stable/c/6763fb409a0b4106676a52cf934440d9484b32c8",
        "https://git.kernel.org/stable/c/cc543e769b97d563b089b9e0ebf8ad361d15076f",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90390.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-90390",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90390.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-90390",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 489824,
  "published_at": "2026-09-17T16:09:24.405+00:00"
}