FKIE_CVE-2025-68741

Vulnerability from fkie_nvd - Published: 2025-12-24 13:16 - Updated: 2026-10-13 10:10
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix improper freeing of purex item In qla2xxx_process_purls_iocb(), an item is allocated via qla27xx_copy_multiple_pkt(), which internally calls qla24xx_alloc_purex_item(). The qla24xx_alloc_purex_item() function may return a pre-allocated item from a per-adapter pool for small allocations, instead of dynamically allocating memory with kzalloc(). An error handling path in qla2xxx_process_purls_iocb() incorrectly uses kfree() to release the item. If the item was from the pre-allocated pool, calling kfree() on it is a bug that can lead to memory corruption. Fix this by using the correct deallocation function, qla24xx_free_purex_item(), which properly handles both dynamically allocated and pre-allocated items.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4bccd506a1f1ab01d1f45b2a3effff6bedc73cf9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5fa1c8226b4532ad7011d295d3ab4ad45df105ae
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/78b1a242fe612a755f2158fd206ee6bb577d18ca
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8e9f0a0717ba31d5842721627ade1e62d7aec012
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cfe3e2f768d248fd3d965d561d0768a56dd0b9f8
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/qla2xxx/qla_nvme.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4bccd506a1f1ab01d1f45b2a3effff6bedc73cf9",
              "status": "affected",
              "version": "875386b98857822b77ac7f95bdf367b70af5b78c",
              "versionType": "git"
            },
            {
              "lessThan": "8e9f0a0717ba31d5842721627ade1e62d7aec012",
              "status": "affected",
              "version": "875386b98857822b77ac7f95bdf367b70af5b78c",
              "versionType": "git"
            },
            {
              "lessThan": "cfe3e2f768d248fd3d965d561d0768a56dd0b9f8",
              "status": "affected",
              "version": "875386b98857822b77ac7f95bdf367b70af5b78c",
              "versionType": "git"
            },
            {
              "lessThan": "5fa1c8226b4532ad7011d295d3ab4ad45df105ae",
              "status": "affected",
              "version": "875386b98857822b77ac7f95bdf367b70af5b78c",
              "versionType": "git"
            },
            {
              "lessThan": "78b1a242fe612a755f2158fd206ee6bb577d18ca",
              "status": "affected",
              "version": "875386b98857822b77ac7f95bdf367b70af5b78c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/qla2xxx/qla_nvme.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.6"
            },
            {
              "lessThan": "6.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.63",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Fix improper freeing of purex item\n\nIn qla2xxx_process_purls_iocb(), an item is allocated via\nqla27xx_copy_multiple_pkt(), which internally calls\nqla24xx_alloc_purex_item().\n\nThe qla24xx_alloc_purex_item() function may return a pre-allocated item\nfrom a per-adapter pool for small allocations, instead of dynamically\nallocating memory with kzalloc().\n\nAn error handling path in qla2xxx_process_purls_iocb() incorrectly uses\nkfree() to release the item. If the item was from the pre-allocated\npool, calling kfree() on it is a bug that can lead to memory corruption.\n\nFix this by using the correct deallocation function,\nqla24xx_free_purex_item(), which properly handles both dynamically\nallocated and pre-allocated items."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nscsi: qla2xxx: Correcci\u00f3n de la liberaci\u00f3n incorrecta de un elemento purex\n\nEn qla2xxx_process_purls_iocb(), se asigna un elemento a trav\u00e9s de qla27xx_copy_multiple_pkt(), que internamente llama a qla24xx_alloc_purex_item().\n\nLa funci\u00f3n qla24xx_alloc_purex_item() puede devolver un elemento preasignado de un pool por adaptador para asignaciones peque\u00f1as, en lugar de asignar memoria din\u00e1micamente con kzalloc().\n\nUna ruta de manejo de errores en qla2xxx_process_purls_iocb() usa incorrectamente kfree() para liberar el elemento. Si el elemento proven\u00eda del pool preasignado, llamar a kfree() sobre \u00e9l es un error que puede llevar a corrupci\u00f3n de memoria.\n\nSolucione esto usando la funci\u00f3n de desasignaci\u00f3n correcta, qla24xx_free_purex_item(), que maneja correctamente tanto los elementos asignados din\u00e1micamente como los preasignados."
    }
  ],
  "id": "CVE-2025-68741",
  "lastModified": "2026-10-13T10:10:00.193",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-68741",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-16T19:31:58.802980Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-12-24T13:16:29.043",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4bccd506a1f1ab01d1f45b2a3effff6bedc73cf9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5fa1c8226b4532ad7011d295d3ab4ad45df105ae"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/78b1a242fe612a755f2158fd206ee6bb577d18ca"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8e9f0a0717ba31d5842721627ade1e62d7aec012"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cfe3e2f768d248fd3d965d561d0768a56dd0b9f8"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}



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