RDMA/mlx5: Fix memory leak in GET_DATA_DIRECT_SYSFS_PATH handler

{
  "id": "38aaa1b7d026fb8aea466c28014a30e017445a8983b29c42106f4fe58c0ea85f",
  "url": "https://osv.dev/vulnerability/CVE-2026-45922",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "RDMA/mlx5: Fix memory leak in GET_DATA_DIRECT_SYSFS_PATH handler",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix memory leak in GET_DATA_DIRECT_SYSFS_PATH handler The UVERBS_HANDLER(MLX5_IB_METHOD_GET_DATA_DIRECT_SYSFS_PATH) function allocates memory for the device path using kobject_get_path(). If the length of the device path exceeds the output buffer length, the function returns -ENOSPC but does not free the allocated memory, resulting in a memory leak. Add a kfree() call to the error path to ensure the allocated memory is properly freed. Compile tested only. Issue found using a prototype static analysis tool and code review.",
    "evidence": "osv:CVE-2026-45922",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.12.75",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.14",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.19.4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-45922",
      "aliases": [
        "CVE-2026-45922"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "ec7ad6530909983c8736c80af46e3529ce7bab55"
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                {
                  "fixed": "ee998cdbff6680891b0efd9d6ce53a388e5342c3"
                },
                {
                  "fixed": "b2bc649c18fbe8a7fd38d17266da3dcbfbcc44d2"
                },
                {
                  "fixed": "b3a10eca24fcfe913c0875e620f19596001bd6dc"
                },
                {
                  "fixed": "9b9d253908478f504297ac283c514e5953ddafa6"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45922.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.12.0"
                },
                {
                  "fixed": "6.12.75"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.14"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "6.19.4"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45922.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:42.271259316Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/9b9d253908478f504297ac283c514e5953ddafa6",
        "https://git.kernel.org/stable/c/b2bc649c18fbe8a7fd38d17266da3dcbfbcc44d2",
        "https://git.kernel.org/stable/c/b3a10eca24fcfe913c0875e620f19596001bd6dc",
        "https://git.kernel.org/stable/c/ee998cdbff6680891b0efd9d6ce53a388e5342c3",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45922.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-45922",
        "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/2026/45xxx/CVE-2026-45922.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-45922",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 509753,
  "published_at": "2026-05-27T12:17:41.431+00:00"
}