scsi: pm8001: Fix use-after-free in pm8001_queue_command()

{
  "id": "6038cc14c1e18c7593e5f4101cb1c54b502052c96f15e0cdf34eb796bdca7f3a",
  "url": "https://osv.dev/vulnerability/CVE-2026-23306",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "scsi: pm8001: Fix use-after-free in pm8001_queue_command()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: scsi: pm8001: Fix use-after-free in pm8001_queue_command() Commit e29c47fe8946 (\"scsi: pm8001: Simplify pm8001_task_exec()\") refactors pm8001_queue_command(), however it introduces a potential cause of a double free scenario when it changes the function to return -ENODEV in case of phy down/device gone state. In this path, pm8001_queue_command() updates task status and calls task_done to indicate to upper layer that the task has been handled. However, this also frees the underlying SAS task. A -ENODEV is then returned to the caller. When libsas sas_ata_qc_issue() receives this error value, it assumes the task wasn't handled/queued by LLDD and proceeds to clean up and free the task again, resulting in a double free. Since pm8001_queue_command() handles the SAS task in this case, it should return 0 to the caller indicating that the task has been handled.",
    "evidence": "osv:CVE-2026-23306",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.167",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.130",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.77",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.17",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.19.7",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-23306",
      "aliases": [
        "CVE-2026-23306"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
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                  "fixed": "8b00427317ba7b7ec91252b034009f638d0f311b"
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                {
                  "fixed": "c5dc39f8ae055520fd778b7fb0423f11586f15c4"
                },
                {
                  "fixed": "824a7672e3540962d5c77d4c6666254d7aa6f0b3"
                },
                {
                  "fixed": "227ff4af00abc40b95123cc27ee8079069dcd8d7"
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                {
                  "fixed": "38353c26db28efd984f51d426eac2396d299cca7"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23306.json"
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          "ranges": [
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              "type": "ECOSYSTEM",
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          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23306.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.288684737Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/227ff4af00abc40b95123cc27ee8079069dcd8d7",
        "https://git.kernel.org/stable/c/38353c26db28efd984f51d426eac2396d299cca7",
        "https://git.kernel.org/stable/c/824a7672e3540962d5c77d4c6666254d7aa6f0b3",
        "https://git.kernel.org/stable/c/8b00427317ba7b7ec91252b034009f638d0f311b",
        "https://git.kernel.org/stable/c/c5dc39f8ae055520fd778b7fb0423f11586f15c4",
        "https://git.kernel.org/stable/c/ebbb852ffbc952b95ddb7e3872b67b3e74c6da47",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23306.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-23306",
        "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/2026/23xxx/CVE-2026-23306.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-23306",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 504537,
  "published_at": "2026-03-25T10:27:01.719+00:00"
}