mm: /proc/pid/smaps_rollup: fix no vma's null-deref

{
  "id": "7e259052b6e8313b99a704eb1724e5be0f6abc1c881aa0ed5a34de6d2d6714c7",
  "url": "https://osv.dev/vulnerability/CVE-2022-50380",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "mm: /proc/pid/smaps_rollup: fix no vma's null-deref",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: mm: /proc/pid/smaps_rollup: fix no vma's null-deref Commit 258f669e7e88 (\"mm: /proc/pid/smaps_rollup: convert to single value seq_file\") introduced a null-deref if there are no vma's in the task in show_smaps_rollup.",
    "evidence": "osv:CVE-2022-50380",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
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            "value": "4.19.264",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.4.221",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.10.152",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.76",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.0.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
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    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2022-50380",
      "aliases": [
        "CVE-2022-50380"
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      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
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          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50380.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:39.523401655Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/33fc9e26b7cb39f0d4219c875a2451802249c225",
        "https://git.kernel.org/stable/c/6bb8769326c46db3058780c0640dcc49d8187b24",
        "https://git.kernel.org/stable/c/97898139ca9b81ba9322a585e07490983c53b55a",
        "https://git.kernel.org/stable/c/a50ed2d28727ff605d95fb9a53be8ff94e8eaaf4",
        "https://git.kernel.org/stable/c/c4c84f06285e48f80e9843d0775ad92714ffc35a",
        "https://git.kernel.org/stable/c/dbe863bce7679c7f5ec0e993d834fe16c5e687b5",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50380.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-50380",
        "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-2022-50380.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-50380",
        "evidence": "/id"
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    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 506931,
  "published_at": "2025-09-18T13:33:02.472+00:00"
}