net: wwan: mhi: fix memory leak in mhi_mbim_dellink

{
  "id": "fd28863c9251a128fbb1fc3e834c26b173ef7bf36654b5480d2b51c7e7f430c6",
  "url": "https://osv.dev/vulnerability/CVE-2022-49866",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "net: wwan: mhi: fix memory leak in mhi_mbim_dellink",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: net: wwan: mhi: fix memory leak in mhi_mbim_dellink MHI driver registers network device without setting the needs_free_netdev flag, and does NOT call free_netdev() when unregisters network device, which causes a memory leak. This patch sets needs_free_netdev to true when registers network device, which makes netdev subsystem call free_netdev() automatically after unregister_netdevice().",
    "evidence": "osv:CVE-2022-49866",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.79",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.0.9",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2022-49866",
      "aliases": [
        "CVE-2022-49866"
      ],
      "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": [
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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": "2845bc9070cef0c651987487d84d4813d64675dd"
                },
                {
                  "fixed": "3cd3ffe952f78ec5dadf300cb58d4b38a0c0106d"
                },
                {
                  "fixed": "668205b9c9f94d5ed6ab00cce9a46a654c2b5d16"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49866.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.15.0"
                },
                {
                  "fixed": "5.15.79"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.0.9"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49866.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:31.986280640Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/2845bc9070cef0c651987487d84d4813d64675dd",
        "https://git.kernel.org/stable/c/3cd3ffe952f78ec5dadf300cb58d4b38a0c0106d",
        "https://git.kernel.org/stable/c/668205b9c9f94d5ed6ab00cce9a46a654c2b5d16",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49866.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-49866",
        "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/2022/49xxx/CVE-2022-49866.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-49866",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 498876,
  "published_at": "2025-05-01T14:10:18.294+00:00"
}