CVE-2025-68741 (GCVE-0-2025-68741)
Vulnerability from cvelistv5
Published
2025-12-24 12:09
Modified
2025-12-24 12:09
Severity ?
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
Impacted products
Vendor Product Version
Linux Linux Version: 875386b98857822b77ac7f95bdf367b70af5b78c
Version: 875386b98857822b77ac7f95bdf367b70af5b78c
Version: 875386b98857822b77ac7f95bdf367b70af5b78c
Version: 875386b98857822b77ac7f95bdf367b70af5b78c
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/qla2xxx/qla_nvme.c"
          ],
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "6.6"
            },
            {
              "lessThan": "6.6",
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              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.63",
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            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
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              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.2",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.19-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "6.6",
                  "vulnerable": true
                },
                {
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                },
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-24T12:09:38.655Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8e9f0a0717ba31d5842721627ade1e62d7aec012"
        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/5fa1c8226b4532ad7011d295d3ab4ad45df105ae"
        },
        {
          "url": "https://git.kernel.org/stable/c/78b1a242fe612a755f2158fd206ee6bb577d18ca"
        }
      ],
      "title": "scsi: qla2xxx: Fix improper freeing of purex item",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68741",
    "datePublished": "2025-12-24T12:09:38.655Z",
    "dateReserved": "2025-12-24T10:30:51.030Z",
    "dateUpdated": "2025-12-24T12:09:38.655Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-68741\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-24T13:16:29.043\",\"lastModified\":\"2025-12-24T13:16:29.043\",\"vulnStatus\":\"Received\",\"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.\"}],\"metrics\":{},\"references\":[{\"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\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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