{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-89975",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-89975"
  ],
  "published": "2026-09-16T10:32:03Z",
  "summary": "nvme-fabrics: fix DHCHAP secret leak on parse failure",
  "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->dhchap_secret or\nopts->dhchap_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.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": null,
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-89975"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/702c1ae0d31b44828ec3c87079def490c1ee1fb3"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/15d7a35a489287109b5a7c157d53d9b8214f0318"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d21da6cc91ba1c4f1ae5ba007f3cb89e1c0c7549"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/afdee49a1b88ed9bb44e2b30e855297c169bcc53"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-09-16T10:32:03Z"
  }
}