mtd: virt_concat: fix use-after-free in mtd_virt_concat_destroy_joins()

{
  "id": "3ae886504aa7320d9b9b32a09aa2732120f3438f7a0585a831add8640d7b61e6",
  "url": "https://osv.dev/vulnerability/CVE-2026-68424",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "mtd: virt_concat: fix use-after-free in mtd_virt_concat_destroy_joins()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: mtd: virt_concat: fix use-after-free in mtd_virt_concat_destroy_joins() mtd_concat_destroy() frees item->concat so calling mtd_virt_concat_put_mtd_devices(item->concat) leads to a use after free. Fix this by moving mtd_virt_concat_put_mtd_devices() before mtd_concat_destroy()",
    "evidence": "osv:CVE-2026-68424",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.1.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-68424",
      "aliases": [
        "CVE-2026-68424"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "43db6366fc2de02050e66389f5628d3fdc9af10a"
                },
                {
                  "fixed": "4d91d783f93430c0efa834daff6640c07d87ebbc"
                },
                {
                  "fixed": "75c0c09541b49daa08fddbc2c18c2232f4eab7d8"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68424.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "7.1.0"
                },
                {
                  "fixed": "7.1.6"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68424.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.426614056Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/4d91d783f93430c0efa834daff6640c07d87ebbc",
        "https://git.kernel.org/stable/c/75c0c09541b49daa08fddbc2c18c2232f4eab7d8",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68424.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-68424",
        "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/2026/68xxx/CVE-2026-68424.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-68424",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 518029,
  "published_at": "2026-08-10T12:04:44.975+00:00"
}