CVE-2026-72219 (GCVE-0-2026-72219)
Vulnerability from cvelistv5
Published
2026-08-15 05:54
Modified
2026-08-17 05:10
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: lockd: Plug nlm_file leak when nlm_do_fopen() fails A client can repeatedly drive nlm_do_fopen() failures by presenting file handles that the underlying export rejects. After kzalloc_obj() succeeds in nlm_lookup_file(), the freshly allocated nlm_file is not yet inserted into nlm_files[]. The nlm_do_fopen() failure path jumps to out_unlock, which releases nlm_file_mutex and returns without freeing the allocation, so each failure leaks one nlm_file. Route the failure through out_free so kfree() runs before the function returns.
References
Impacted products
Vendor Product Version
Linux Linux Version: e580323ac0b51ad10ec2e181d1f777479b7983e7
Version: 7f024fcd5c97dc70bb9121c80407cf3cf9be7159
Version: 7f024fcd5c97dc70bb9121c80407cf3cf9be7159
Version: 7f024fcd5c97dc70bb9121c80407cf3cf9be7159
Version: 7f024fcd5c97dc70bb9121c80407cf3cf9be7159
Version: 7f024fcd5c97dc70bb9121c80407cf3cf9be7159
Version: 7f024fcd5c97dc70bb9121c80407cf3cf9be7159
Version: 7f024fcd5c97dc70bb9121c80407cf3cf9be7159
Version: 5.10.220   ≤
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{
  "containers": {
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      "cpeApplicability": [
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              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlockd: Plug nlm_file leak when nlm_do_fopen() fails\n\nA client can repeatedly drive nlm_do_fopen() failures by presenting\nfile handles that the underlying export rejects. After kzalloc_obj()\nsucceeds in nlm_lookup_file(), the freshly allocated nlm_file is not\nyet inserted into nlm_files[]. The nlm_do_fopen() failure path jumps\nto out_unlock, which releases nlm_file_mutex and returns without\nfreeing the allocation, so each failure leaks one nlm_file.\n\nRoute the failure through out_free so kfree() runs before the\nfunction returns."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:10:34.296Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/bca74fff138429f3d5802865f38fc883d53a4f1a"
        },
        {
          "url": "https://git.kernel.org/stable/c/d7c677feb3aa1f42b1026d75a8ea61338b51e4fb"
        },
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          "url": "https://git.kernel.org/stable/c/39f59bf67231ed2eb0cdf6337194360e964b609a"
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          "url": "https://git.kernel.org/stable/c/ddfbd816273b4e9c9b836f5b8773664c6f40f807"
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          "url": "https://git.kernel.org/stable/c/1403f1221a35a6caf959bb7bf005741f17263c66"
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        },
        {
          "url": "https://git.kernel.org/stable/c/f16a1513452edb532fec81e591c64c320866719c"
        }
      ],
      "title": "lockd: Plug nlm_file leak when nlm_do_fopen() fails",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72219",
    "datePublished": "2026-08-15T05:54:13.067Z",
    "dateReserved": "2026-08-09T03:40:39.913Z",
    "dateUpdated": "2026-08-17T05:10:34.296Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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