wifi: wilc1000: fix dma_buffer leak on bus acquire failure

{
  "id": "fad4ac1f9bc23692777976463add096fc7ae59bb65ce498e2a7e2ec3fb421f0a",
  "url": "https://osv.dev/vulnerability/CVE-2026-64145",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "wifi: wilc1000: fix dma_buffer leak on bus acquire failure",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: wifi: wilc1000: fix dma_buffer leak on bus acquire failure wilc_wlan_firmware_download() allocates dma_buffer with kmalloc() at the top of the function and uses a 'fail:' label to free it via kfree(dma_buffer) on error. All later error paths correctly use 'goto fail' to route through this cleanup. However, the early failure path after the first acquire_bus() call uses a bare 'return ret;', which leaks dma_buffer whenever the bus acquire fails. Replace the early return with goto fail so the existing cleanup path runs. Found via a custom Coccinelle semantic patch hunting for kmalloc'd locals leaked on early-return error paths in driver firmware-download code.",
    "evidence": "osv:CVE-2026-64145",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.18.34",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.0.11",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-64145",
      "aliases": [
        "CVE-2026-64145"
      ],
      "affected": [
        {
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                {
                  "fixed": "95c82d498d74c4e587db30021ca1aec90e29b5a5"
                },
                {
                  "fixed": "32d7584441b9ecb279a03653b432612546e5efbe"
                },
                {
                  "fixed": "dd7b6a8671939708cc4b7a46786d8c11297e8f69"
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64145.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.34"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.0.11"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64145.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.952720971Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/32d7584441b9ecb279a03653b432612546e5efbe",
        "https://git.kernel.org/stable/c/95c82d498d74c4e587db30021ca1aec90e29b5a5",
        "https://git.kernel.org/stable/c/dd7b6a8671939708cc4b7a46786d8c11297e8f69",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64145.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-64145",
        "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/2026/64xxx/CVE-2026-64145.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-64145",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 505040,
  "published_at": "2026-07-19T15:40:36.767+00:00"
}