scsi: qla2xxx: Zero mailbox struct in qla2x00_get_firmware_state()

{
  "id": "64212fb741460db0c10110b60f05e7451c3920b2598a2939e1b9360804e1b24a",
  "url": "https://osv.dev/vulnerability/CVE-2026-89852",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "scsi: qla2xxx: Zero mailbox struct in qla2x00_get_firmware_state()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Zero mailbox struct in qla2x00_get_firmware_state() The mbx_cmd_t is allocated on the stack but left uninitialized. qla2x00_mailbox_command() has several early-return paths (PCI permanent failure, device failed, EEH busy, ISP abort pending, mailbox access timeout, purge mbox) that return without writing the input mailbox registers back into mcp->mb[]. qla2x00_get_firmware_state() then unconditionally copies mcp->mb[1..6] (and mb[12]) into the caller's states[] array regardless of the return value. On such a failure the copied values are uninitialized kernel stack memory, which is then exposed to userspace via the fw_state and mpi_fw_state sysfs handlers. Zero the mailbox struct so a failed query yields deterministic zeroed state instead of leaking stack contents.",
    "evidence": "osv:CVE-2026-89852",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.270",
            "evidence": "/affected/1/ranges"
          },
          {
            "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": "unknown",
    "structured": {
      "id": "CVE-2026-89852",
      "aliases": [
        "CVE-2026-89852"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "4d4df1932b6b116aecc81039066fec27f2050762"
                },
                {
                  "fixed": "f8fc5cc6b3284506c6ab83c822c48133377668bb"
                },
                {
                  "fixed": "f29695b1138ae2539c5cd6cdaba9b1b072aaa81a"
                },
                {
                  "fixed": "13d645a2cdb224d27205368f3e3c68bb160daf97"
                },
                {
                  "fixed": "2f847f06bb223aa895eea91fc9e5e2d6314038eb"
                },
                {
                  "fixed": "1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79"
                },
                {
                  "fixed": "e6cfb1ee18336aab41a0941d6d3ea5009aaafc05"
                },
                {
                  "fixed": "9f31de4d07e4cde91dfc24522993a5fbb4d67083"
                },
                {
                  "fixed": "9efaa782845b4d5fb3e01242be0d06ebc7428d8f"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89852.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "2.6.26"
                },
                {
                  "fixed": "5.10.270"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.221"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.188"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.157"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.110"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.51"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.2.5"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89852.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.642471289Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/13d645a2cdb224d27205368f3e3c68bb160daf97",
        "https://git.kernel.org/stable/c/1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79",
        "https://git.kernel.org/stable/c/2f847f06bb223aa895eea91fc9e5e2d6314038eb",
        "https://git.kernel.org/stable/c/9efaa782845b4d5fb3e01242be0d06ebc7428d8f",
        "https://git.kernel.org/stable/c/9f31de4d07e4cde91dfc24522993a5fbb4d67083",
        "https://git.kernel.org/stable/c/e6cfb1ee18336aab41a0941d6d3ea5009aaafc05",
        "https://git.kernel.org/stable/c/f29695b1138ae2539c5cd6cdaba9b1b072aaa81a",
        "https://git.kernel.org/stable/c/f8fc5cc6b3284506c6ab83c822c48133377668bb",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89852.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-89852",
        "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-2026-89852.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-89852",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 499743,
  "published_at": "2026-09-16T10:31:26.012+00:00"
}