scsi: qla2xxx: Reject non-SCSI SRB on status IOCB fast path

{
  "id": "51dd31e9b5e809b5352efae60525c078ad1e9d522ec0cf2b217161a54d3a1750",
  "url": "https://osv.dev/vulnerability/CVE-2026-89849",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "scsi: qla2xxx: Reject non-SCSI SRB on status IOCB fast path",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Reject non-SCSI SRB on status IOCB fast path qla2x00_status_entry() filters out non-TYPE_SRB entries and the SRB_NVME_CMD, SRB_BIDI_CMD and SRB_TM_CMD types, then falls through to a SCSI fast path that assumes the command is an SRB_SCSI_CMD. The first thing on that path, qla_chk_edif_rx_sa_delete_pending(), and the subsequent handling both evaluate GET_CMD_SP(sp), i.e. sp->u.scmd.cmd. The srb u union overlays the SCSI command pointer with other command layouts (bsg_job, iocb_cmd). If firmware delivers an unexpected STATUS_TYPE IOCB for a non-SCSI handle, sp->u.scmd.cmd can read as a non-NULL garbage pointer, bypassing the NULL checks in qla_chk_edif_rx_sa_delete_pending() and at the cp == NULL test, and leading to a wild pointer dereference. Reject any SRB whose type is not SRB_SCSI_CMD before entering the fast path. The outstanding_cmds slot is left untouched so a genuinely non-SCSI command still completes through its proper handler.",
    "evidence": "osv:CVE-2026-89849",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.221",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.188",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.157",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.110",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.51",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-89849",
      "aliases": [
        "CVE-2026-89849"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                {
                  "fixed": "9204fb0888374083be74f799049649a17eab4191"
                },
                {
                  "fixed": "b7418198b45b327194b97f856fe8ea8daa91f3fd"
                },
                {
                  "fixed": "8f0e31e7a41376abe7d6ca7cbee07fcf9de071e6"
                },
                {
                  "fixed": "e38041b47c29316ba79b645e2ae0b713d216b1db"
                },
                {
                  "fixed": "e93aa3c5125d9a4352ac0fa8ba4a7f8f87881805"
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                {
                  "fixed": "29f1f9ad9e354cd0b6e4f6fc75ba09162d6a04d9"
                },
                {
                  "fixed": "0f41d07d72f2245208c45374ca8d0a1846cad667"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89849.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.15.0"
                },
                {
                  "fixed": "5.15.221"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
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                {
                  "introduced": "5.16.0"
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                  "fixed": "6.1.188"
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            {
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                  "introduced": "6.2.0"
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            {
              "type": "ECOSYSTEM",
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                  "introduced": "6.7.0"
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              ]
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            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.13.0"
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                {
                  "fixed": "6.18.51"
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            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.2.5"
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              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89849.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.172848935Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0f41d07d72f2245208c45374ca8d0a1846cad667",
        "https://git.kernel.org/stable/c/29f1f9ad9e354cd0b6e4f6fc75ba09162d6a04d9",
        "https://git.kernel.org/stable/c/8f0e31e7a41376abe7d6ca7cbee07fcf9de071e6",
        "https://git.kernel.org/stable/c/9204fb0888374083be74f799049649a17eab4191",
        "https://git.kernel.org/stable/c/b7418198b45b327194b97f856fe8ea8daa91f3fd",
        "https://git.kernel.org/stable/c/e38041b47c29316ba79b645e2ae0b713d216b1db",
        "https://git.kernel.org/stable/c/e93aa3c5125d9a4352ac0fa8ba4a7f8f87881805",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89849.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-89849",
        "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/2026/89xxx/CVE-2026-89849.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-89849",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 497257,
  "published_at": "2026-09-16T10:31:23.18+00:00"
}