erofs: fix memory leak of LZMA global compressed deduplication

{
  "id": "03a737710eb992c7d3f784b0263195f1f698e38f2f4769c8ffe89f3ffb3c678d",
  "url": "https://osv.dev/vulnerability/CVE-2023-52526",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "erofs: fix memory leak of LZMA global compressed deduplication",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: erofs: fix memory leak of LZMA global compressed deduplication When stressing microLZMA EROFS images with the new global compressed deduplication feature enabled (`-Ededupe`), I found some short-lived temporary pages weren't properly released, which could slowly cause unexpected OOMs hours later. Let's fix it now (LZ4 and DEFLATE don't have this issue.)",
    "evidence": "osv:CVE-2023-52526",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.57",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.5.7",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-52526",
      "aliases": [
        "CVE-2023-52526"
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      "affected": [
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              "type": "GIT",
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                  "fixed": "c955751cbf864cf2055117dd3fe7f780d2a57b56"
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                  "fixed": "75a5221630fe5aa3fedba7a06be618db0f79ba1e"
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        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.1.0"
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                {
                  "fixed": "6.1.57"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.2.0"
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                  "fixed": "6.5.7"
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52526.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:48.853108668Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/6a5a8f0a9740f865693d5aa97a42cc4504538e18",
        "https://git.kernel.org/stable/c/75a5221630fe5aa3fedba7a06be618db0f79ba1e",
        "https://git.kernel.org/stable/c/c955751cbf864cf2055117dd3fe7f780d2a57b56",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52526.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-52526",
        "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/2023/52xxx/CVE-2023-52526.json"
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    },
    "related_cves": [
      {
        "value": "CVE-2023-52526",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 516786,
  "published_at": "2024-03-02T21:52:32.261+00:00"
}