{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-23306",
  "modified": "2026-10-09T11:39:44Z",
  "upstream": [
    "CVE-2026-23306"
  ],
  "published": "2026-03-25T10:28:03Z",
  "summary": "scsi: pm8001: Fix use-after-free in pm8001_queue_command()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: pm8001: Fix use-after-free in pm8001_queue_command()\n\nCommit e29c47fe8946 (\"scsi: pm8001: Simplify pm8001_task_exec()\") refactors\npm8001_queue_command(), however it introduces a potential cause of a double\nfree scenario when it changes the function to return -ENODEV in case of phy\ndown/device gone state.\n\nIn this path, pm8001_queue_command() updates task status and calls\ntask_done to indicate to upper layer that the task has been handled.\nHowever, this also frees the underlying SAS task. A -ENODEV is then\nreturned to the caller. When libsas sas_ata_qc_issue() receives this error\nvalue, it assumes the task wasn't handled/queued by LLDD and proceeds to\nclean up and free the task again, resulting in a double free.\n\nSince pm8001_queue_command() handles the SAS task in this case, it should\nreturn 0 to the caller indicating that the task has been handled.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
    }
  ],
  "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": "6.1.167",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-23306"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ebbb852ffbc952b95ddb7e3872b67b3e74c6da47"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8b00427317ba7b7ec91252b034009f638d0f311b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c5dc39f8ae055520fd778b7fb0423f11586f15c4"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/824a7672e3540962d5c77d4c6666254d7aa6f0b3"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/227ff4af00abc40b95123cc27ee8079069dcd8d7"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/38353c26db28efd984f51d426eac2396d299cca7"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T13:16:28Z",
    "severity": {
      "source": "kernel CNA",
      "cvss_v3_score": 7.8,
      "cvss_v3_severity": "High",
      "scenario": "AV:L - The pm8001 is a PCI-based SAS/SATA host bus adapter driver. Triggering this vulnerability requires local access to submit SCSI/ATA commands to a device managed by this HBA, which is done through local SCSI device interfaces.\nAC:L - The vulnerability triggers deterministically when I/O is submitted to a SATA device that is in the \"gone\" state. The attacker can control the device removal (e.g., by physically disconnecting a SATA drive or through hotplug) and then issue I/O, reliably triggering the double-free.\nPR:L - Submitting SCSI commands requires access to SCSI device files (e.g., /dev/sdX), which typically requires at least basic user-level access with appropriate device permissions. Root is not strictly required if the user has group access to the device.\nUI:N - No user interaction is required. The attacker can trigger the vulnerability by issuing I/O commands to a gone device independently.\nS:U - The vulnerability affects the kernel within its own security authority. There is no crossing of a security boundary such as a VM escape or sandbox escape.\nC:H - A double-free on slab memory (kmem_cache) is a powerful exploitation primitive. Through heap spraying, an attacker can control the contents of the reallocated object, potentially achieving arbitrary kernel memory read capabilities.\nI:H - The double-free allows an attacker to reclaim the freed slab object with controlled data, enabling type confusion and arbitrary kernel memory write primitives that can lead to code execution.\nA:H - The double-free will at minimum cause a kernel crash/panic when the slab allocator detects corruption, and can also be used to cause repeated crashes for denial of service."
    }
  }
}