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CVE-2026-89852

Estado: RecibidaSin puntuar—

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.

Leer descripción completaMostrar menos

Zero the mailbox struct so a failed query yields deterministic zeroed state instead of leaking stack contents.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-89852",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4d4df1932b6b116aecc81039066fec27f2050762",
              "lessThan": "f8fc5cc6b3284506c6ab83c822c48133377668bb",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4d4df1932b6b116aecc81039066fec27f2050762",
              "lessThan": "f29695b1138ae2539c5cd6cdaba9b1b072aaa81a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4d4df1932b6b116aecc81039066fec27f2050762",
              "lessThan": "13d645a2cdb224d27205368f3e3c68bb160daf97",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4d4df1932b6b116aecc81039066fec27f2050762",
              "lessThan": "2f847f06bb223aa895eea91fc9e5e2d6314038eb",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4d4df1932b6b116aecc81039066fec27f2050762",
              "lessThan": "1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4d4df1932b6b116aecc81039066fec27f2050762",
              "lessThan": "e6cfb1ee18336aab41a0941d6d3ea5009aaafc05",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "9f31de4d07e4cde91dfc24522993a5fbb4d67083",
              "versionType": "git"
            },
            {
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              "lessThan": "9efaa782845b4d5fb3e01242be0d06ebc7428d8f",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/scsi/qla2xxx/qla_mbx.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.26"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "2.6.26",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.51",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.5",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/scsi/qla2xxx/qla_mbx.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-16T11:16:52.900",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/13d645a2cdb224d27205368f3e3c68bb160daf97",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2f847f06bb223aa895eea91fc9e5e2d6314038eb",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9efaa782845b4d5fb3e01242be0d06ebc7428d8f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9f31de4d07e4cde91dfc24522993a5fbb4d67083",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e6cfb1ee18336aab41a0941d6d3ea5009aaafc05",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f29695b1138ae2539c5cd6cdaba9b1b072aaa81a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f8fc5cc6b3284506c6ab83c822c48133377668bb",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Zero mailbox struct in qla2x00_get_firmware_state()\n\nThe mbx_cmd_t is allocated on the stack but left uninitialized.\nqla2x00_mailbox_command() has several early-return paths (PCI permanent\nfailure, device failed, EEH busy, ISP abort pending, mailbox access\ntimeout, purge mbox) that return without writing the input mailbox\nregisters back into mcp->mb[]. qla2x00_get_firmware_state() then\nunconditionally copies mcp->mb[1..6] (and mb[12]) into the caller's\nstates[] array regardless of the return value.\n\nOn such a failure the copied values are uninitialized kernel stack\nmemory, which is then exposed to userspace via the fw_state and\nmpi_fw_state sysfs handlers. Zero the mailbox struct so a failed query\nyields deterministic zeroed state instead of leaking stack contents."
    }
  ],
  "lastModified": "2026-09-16T11:16:52.900",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}