{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "f50fff73d620cd6e8f48bc58d4f1c944615a3fea"
            },
            {
              "fixed": "702c1ae0d31b44828ec3c87079def490c1ee1fb3"
            },
            {
              "fixed": "15d7a35a489287109b5a7c157d53d9b8214f0318"
            },
            {
              "fixed": "d21da6cc91ba1c4f1ae5ba007f3cb89e1c0c7549"
            },
            {
              "fixed": "afdee49a1b88ed9bb44e2b30e855297c169bcc53"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.0.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.51"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89975.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-fabrics: fix DHCHAP secret leak on parse failure\n\nnvmf_parse_options() duplicates dhchap_secret and dhchap_ctrl_secret\nwith match_strdup() before validating the DHHC-1: representation.\n\nIf validation fails, the parser returns -EINVAL before the temporary\nstring in p is assigned to opts-\u003edhchap_secret or\nopts-\u003edhchap_ctrl_secret. nvmf_create_ctrl() subsequently frees opts,\nbut nvmf_free_options() cannot release the unassigned temporary string.\nEach rejected option therefore leaks one allocation.\n\nThis is easy to miss because valid secrets transfer ownership to opts\nand are freed normally, while the malformed-secret path still returns\nthe expected -EINVAL to userspace.\n\nWith CONFIG_NVME_HOST_AUTH enabled, the leak is reachable before the\nrequired-option checks and transport lookup. No NVMe-oF target or\nworking transport connection is required; for example, repeatedly\nwriting\n\n\tdhchap_secret=BAD\n\nor\n\n\tdhchap_ctrl_secret=BAD\n\nto /dev/nvme-fabrics deterministically takes the leaking parse path.\n\nFree the temporary string before leaving both validation error paths.\nUse kfree_sensitive() because the copied option may contain secret\nmaterial even when its representation is rejected, matching the\nsensitive cleanup used for stored DHCHAP secrets.",
  "id": "CVE-2026-89975",
  "modified": "2026-09-18T03:31:03.827487267Z",
  "published": "2026-09-16T10:32:53.836Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/15d7a35a489287109b5a7c157d53d9b8214f0318"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/702c1ae0d31b44828ec3c87079def490c1ee1fb3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/afdee49a1b88ed9bb44e2b30e855297c169bcc53"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d21da6cc91ba1c4f1ae5ba007f3cb89e1c0c7549"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89975.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89975"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "nvme-fabrics: fix DHCHAP secret leak on parse failure"
}