mm/mempolicy: fix memory leak in set_mempolicy_home_node system call

{
  "id": "7032a418145c4f5b6e01f292bcaf5d07c899f1e38cee489adc12712c5a80f8ee",
  "url": "https://osv.dev/vulnerability/CVE-2022-50391",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "mm/mempolicy: fix memory leak in set_mempolicy_home_node system call",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: mm/mempolicy: fix memory leak in set_mempolicy_home_node system call When encountering any vma in the range with policy other than MPOL_BIND or MPOL_PREFERRED_MANY, an error is returned without issuing a mpol_put on the policy just allocated with mpol_dup(). This allows arbitrary users to leak kernel memory.",
    "evidence": "osv:CVE-2022-50391",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.0.17",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.3",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2022-50391",
      "aliases": [
        "CVE-2022-50391"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c6018b4b254971863bd0ad36bb5e7d0fa0f0ddb0"
                },
                {
                  "fixed": "4ca0eb6b2f3add8c5daefb726ce57dc95d103d33"
                },
                {
                  "fixed": "0ce4cc6d269ddc448a825955b495f662f5d9e153"
                },
                {
                  "fixed": "38ce7c9bdfc228c14d7621ba36d3eebedd9d4f76"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50391.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.17.0"
                },
                {
                  "fixed": "6.0.17"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.1.0"
                },
                {
                  "fixed": "6.1.3"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50391.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:23.360123712Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0ce4cc6d269ddc448a825955b495f662f5d9e153",
        "https://git.kernel.org/stable/c/38ce7c9bdfc228c14d7621ba36d3eebedd9d4f76",
        "https://git.kernel.org/stable/c/4ca0eb6b2f3add8c5daefb726ce57dc95d103d33",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50391.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-50391",
        "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/2022/50xxx/CVE-2022-50391.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-50391",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 489421,
  "published_at": "2025-09-18T13:33:10.768+00:00"
}