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CVE-2025-40118

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: pm80xx: Fix array-index-out-of-of-bounds on rmmod Since commit f7b705c238d1 ("scsi: pm80xx: Set phy_attached to zero when device is gone") UBSAN reports: UBSAN: array-index-out-of-bounds in drivers/scsi/pm8001/pm8001_sas.c:786:17 index 28 is out of range for type 'pm8001_phy [16]' on rmmod when using an expander. For a direct attached device, attached_phy contains the local phy id. For a device behind an expander, attached_phy contains the remote phy id, not the local phy id. I.e. while pm8001_ha will have pm8001_ha->chip->n_phy local phys, for a device behind an expander, attached_phy can be much larger than pm8001_ha->chip->n_phy (depending on the amount of phys of the expander). E.g. on my system pm8001_ha has 8 phys with phy ids 0-7. One of the ports has an expander connected. The expander has 31 phys with phy ids 0-30. The pm8001_ha->phy array only contains the phys of the HBA. It does not contain the phys of the expander. Thus, it is wrong to use attached_phy to index the pm8001_ha->phy array for a device behind an expander. Thus, we can only clear phy_attached for devices that are directly attached.

Severity
HIGH
CVSS score
7.8 (v3.1)
Vulnerability status
Deferred
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-11-12 11:15:41.117000
Last modified
2026-10-19 21:10:00.160000
View original CVE JSON 
{
  "id": "CVE-2025-40118",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-11-12T11:15:41.117",
  "lastModified": "2026-10-19T21:10:00.160",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: pm80xx: Fix array-index-out-of-of-bounds on rmmod\n\nSince commit f7b705c238d1 (\"scsi: pm80xx: Set phy_attached to zero when\ndevice is gone\") UBSAN reports:\n\n  UBSAN: array-index-out-of-bounds in drivers/scsi/pm8001/pm8001_sas.c:786:17\n  index 28 is out of range for type 'pm8001_phy [16]'\n\non rmmod when using an expander.\n\nFor a direct attached device, attached_phy contains the local phy id.\nFor a device behind an expander, attached_phy contains the remote phy\nid, not the local phy id.\n\nI.e. while pm8001_ha will have pm8001_ha->chip->n_phy local phys, for a\ndevice behind an expander, attached_phy can be much larger than\npm8001_ha->chip->n_phy (depending on the amount of phys of the\nexpander).\n\nE.g. on my system pm8001_ha has 8 phys with phy ids 0-7.  One of the\nports has an expander connected.  The expander has 31 phys with phy ids\n0-30.\n\nThe pm8001_ha->phy array only contains the phys of the HBA.  It does not\ncontain the phys of the expander.  Thus, it is wrong to use attached_phy\nto index the pm8001_ha->phy array for a device behind an expander.\n\nThus, we can only clear phy_attached for devices that are directly\nattached."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nscsi: pm80xx: Corrección de índice de array fuera de límites en rmmod\n\nDesde el commit f7b705c238d1 (“scsi: pm80xx: Establecer phy_attached a cero cuando el dispositivo desaparece”) UBSAN informa:\n\n  UBSAN: índice de array fuera de límites en drivers/scsi/pm8001/pm8001_sas.c:786:17\n  el índice 28 está fuera de rango para el tipo 'pm8001_phy [16]'\n\nen rmmod cuando se utiliza un expansor.\n\nPara un dispositivo conectado directamente, attached_phy contiene el ID de phy local.\nPara un dispositivo detrás de un expansor, attached_phy contiene el ID de phy remoto, no el ID de phy local.\n\nEs decir, mientras que pm8001_ha tendrá pm8001_ha->chip->n_phy phys locales, para un dispositivo detrás de un expansor, attached_phy puede ser mucho mayor que pm8001_ha->chip->n_phy (dependiendo de la cantidad de phys del expansor).\n\nPor ejemplo, en mi sistema pm8001_ha tiene 8 phys con IDs de phy 0-7. Uno de los puertos tiene un expansor conectado. El expansor tiene 31 phys con IDs de phy 0-30.\n\nEl array pm8001_ha->phy solo contiene los phys del HBA. No contiene los phys del expansor. Por lo tanto, es incorrecto usar attached_phy para indexar el array pm8001_ha->phy para un dispositivo detrás de un expansor.\n\nPor lo tanto, solo podemos borrar phy_attached para dispositivos que están conectados directamente."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/scsi/pm8001/pm8001_sas.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "05b512879eab41faa515b67fa3896d0005e97909",
              "lessThan": "d94be0a6ae9ade706d4270e740bdb4f79953a7fc",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "bc2140c8136200b4437e1abc0fb659968cb9baab",
              "lessThan": "45acbf154befedd9bc135f5e031fe7855d1e6493",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "1d8f9378cb4800c18e20d80ecd605b2b93e87a03",
              "lessThan": "eef5ef400893f8e3dbb09342583be0cdc716d566",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "30e482dfb8f27d22f518695d4bcb5e7f4c6cb08a",
              "lessThan": "9c671d4dbfbfb0d73cfdfb706afb36d9ad60a582",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "a862d24e1fc3ab1b5e5f20878d2898cea346d0ec",
              "lessThan": "e62251954a128a2d0fcbc19e5fa39e08935bb628",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "0f9802f174227f553959422f844eeb9ba72467fe",
              "lessThan": "9326a1541e1b7ed3efdbab72061b82cf01c6477a",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f7b705c238d1483f0a766e2b20010f176e5c0fb7",
              "lessThan": "83ced3c206c292458e47c7fac54223abc7141585",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f7b705c238d1483f0a766e2b20010f176e5c0fb7",
              "lessThan": "251be2f6037fb7ab399f68cd7428ff274133d693",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "722026c010fa75bcf9e2373aff1d7930a3d7e3cf",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "5.4.293",
              "lessThan": "5.4.301",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "5.10.237",
              "lessThan": "5.10.246",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "5.15.181",
              "lessThan": "5.15.195",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "6.1.136",
              "lessThan": "6.1.156",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "6.6.89",
              "lessThan": "6.6.112",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "6.12.26",
              "lessThan": "6.12.53",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "6.14.5",
              "lessThan": "6.15",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/scsi/pm8001/pm8001_sas.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.15",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.15",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "5.4.301",
              "lessThanOrEqual": "5.4.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "5.10.246",
              "lessThanOrEqual": "5.10.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "5.15.195",
              "lessThanOrEqual": "5.15.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.156",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.112",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.53",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.17.3",
              "lessThanOrEqual": "6.17.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9
      }
    ]
  },
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/251be2f6037fb7ab399f68cd7428ff274133d693",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/45acbf154befedd9bc135f5e031fe7855d1e6493",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/83ced3c206c292458e47c7fac54223abc7141585",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9326a1541e1b7ed3efdbab72061b82cf01c6477a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9c671d4dbfbfb0d73cfdfb706afb36d9ad60a582",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d94be0a6ae9ade706d4270e740bdb4f79953a7fc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e62251954a128a2d0fcbc19e5fa39e08935bb628",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/eef5ef400893f8e3dbb09342583be0cdc716d566",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}