{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-89849",
  "modified": "2026-10-09T11:39:44Z",
  "upstream": [
    "CVE-2026-89849"
  ],
  "published": "2026-09-16T10:32:03Z",
  "summary": "scsi: qla2xxx: Reject non-SCSI SRB on status IOCB fast path",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Reject non-SCSI SRB on status IOCB fast path\n\nqla2x00_status_entry() filters out non-TYPE_SRB entries and the\nSRB_NVME_CMD, SRB_BIDI_CMD and SRB_TM_CMD types, then falls through to a\nSCSI fast path that assumes the command is an SRB_SCSI_CMD. The first\nthing on that path, qla_chk_edif_rx_sa_delete_pending(), and the\nsubsequent handling both evaluate GET_CMD_SP(sp), i.e. sp->u.scmd.cmd.\n\nThe srb u union overlays the SCSI command pointer with other command\nlayouts (bsg_job, iocb_cmd). If firmware delivers an unexpected\nSTATUS_TYPE IOCB for a non-SCSI handle, sp->u.scmd.cmd can read as a\nnon-NULL garbage pointer, bypassing the NULL checks in\nqla_chk_edif_rx_sa_delete_pending() and at the cp == NULL test, and\nleading to a wild pointer dereference.\n\nReject any SRB whose type is not SRB_SCSI_CMD before entering the fast\npath. The outstanding_cmds slot is left untouched so a genuinely\nnon-SCSI command still completes through its proper handler.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/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": "6.1.188",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-89849"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9204fb0888374083be74f799049649a17eab4191"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b7418198b45b327194b97f856fe8ea8daa91f3fd"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8f0e31e7a41376abe7d6ca7cbee07fcf9de071e6"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e38041b47c29316ba79b645e2ae0b713d216b1db"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e93aa3c5125d9a4352ac0fa8ba4a7f8f87881805"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/29f1f9ad9e354cd0b6e4f6fc75ba09162d6a04d9"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0f41d07d72f2245208c45374ca8d0a1846cad667"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-09-16T14:40:32Z",
    "severity": {
      "source": "kernel CNA",
      "cvss_v3_score": 8.8,
      "cvss_v3_severity": "High",
      "scenario": "AV:A - qla2xxx processes STATUS_TYPE IOCBs from the Fibre Channel/FCoE HBA response queue in interrupt context. A peer on the same SAN fabric can keep non-SCSI SRBs (login, CT, NACK, NVMe LS) outstanding and drive firmware completions; FC is a non-routable fabric, so Adjacent is the highest defensible vector.\nAC:L - Firmware already completes several non-SCSI types (NVMe, bidirectional, task-management) via STATUS_TYPE, and the SCSI fast path was an unguarded fall-through. Once a STATUS_TYPE IOCB names a non-SCSI handle, the type confusion is deterministic, with no race or layout outside attacker influence.\nPR:N - Fibre Channel has no host authentication by default. Fabric login, nameserver CT, target-mode NACK, and I/O completions are handled in the HBA ISR/DPC with no Linux account or capability required on the victim.\nUI:N - Response-queue processing runs automatically from the HBA interrupt and qla_do_work paths. No victim mount, open, or other user action is required.\nS:U - The type confusion and wild-pointer access occur in the host kernel that owns the qla2xxx driver. This is not a VM escape, IOMMU bypass, or other cross-authority impact.\nC:H - GET_CMD_SP(sp) overlays scsi_cmnd* with other SRB union members (bsg_job*, ctarg.iocb, ntfy, sa_ctl). Treating those live kernel pointers as scsi_cmnd yields wild reads of command and sense fields, a type-confusion primitive that can be leveraged for kernel memory disclosure.\nI:H - The same type confusion writes through the forged scsi_cmnd via scsi_set_resid and memset/memcpy of firmware sense data into cp->sense_buffer. Type confusion with those kernel writes is High integrity and can hijack control flow.\nA:H - Dereferencing the overlaid non-SCSI pointer as scsi_cmnd in interrupt/completion context causes a kernel oops or panic, matching related qla_chk_edif_rx_sa_delete_pending crashes on this path."
    }
  }
}