CVE-2026-98553 (GCVE-0-2026-98553)
Vulnerability from cvelistv5
Published
2026-10-18 15:18
Modified
2026-10-19 09:21
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: autofs: fix sbi->pipe file reference leak in autofs_kill_sb() When autofs_fill_super() fails before clearing AUTOFS_SBI_CATATONIC (for example, when find_get_pid() fails on an invalid pgrp mount option, or when an fs_context is closed before mounting), deactivate_locked_super() invokes autofs_kill_sb() -> autofs_catatonic_mode(sbi). Because AUTOFS_SBI_CATATONIC is still set in sbi->flags, autofs_catatonic_mode() returns early without calling fput(sbi->pipe), permanently leaking the pipe struct file reference. Explicitly release sbi->pipe in autofs_kill_sb() if it is still non-NULL after autofs_catatonic_mode().
References
Impacted products
Vendor Product Version
Linux Linux Version: ebc921ca9b92a3cf304d99bd7b7f373ec78c7ed7
Version: ebc921ca9b92a3cf304d99bd7b7f373ec78c7ed7
Version: ebc921ca9b92a3cf304d99bd7b7f373ec78c7ed7
Version: ebc921ca9b92a3cf304d99bd7b7f373ec78c7ed7
Version: ebc921ca9b92a3cf304d99bd7b7f373ec78c7ed7
Version: ebc921ca9b92a3cf304d99bd7b7f373ec78c7ed7
Version: ebc921ca9b92a3cf304d99bd7b7f373ec78c7ed7
Version: ebc921ca9b92a3cf304d99bd7b7f373ec78c7ed7
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/autofs/inode.c"
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          "vendor": "Linux",
          "versions": [
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              "version": "4.18"
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              "version": "0",
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              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nautofs: fix sbi-\u003epipe file reference leak in autofs_kill_sb()\n\nWhen autofs_fill_super() fails before clearing AUTOFS_SBI_CATATONIC (for\nexample, when find_get_pid() fails on an invalid pgrp mount option, or\nwhen an fs_context is closed before mounting), deactivate_locked_super()\ninvokes autofs_kill_sb() -\u003e autofs_catatonic_mode(sbi).\n\nBecause AUTOFS_SBI_CATATONIC is still set in sbi-\u003eflags,\nautofs_catatonic_mode() returns early without calling fput(sbi-\u003epipe),\npermanently leaking the pipe struct file reference.\n\nExplicitly release sbi-\u003epipe in autofs_kill_sb() if it is still non-NULL\nafter autofs_catatonic_mode()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:21:36.247Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3684e2273ba94553af3c5195a46a50214a1a96e3"
        },
        {
          "url": "https://git.kernel.org/stable/c/0662b1ff9b383d5a233d344e4dc518c27a17f7b8"
        },
        {
          "url": "https://git.kernel.org/stable/c/34fa4c1c6e10507dc60e35a82cc9655666946cfd"
        },
        {
          "url": "https://git.kernel.org/stable/c/a58593b501b7be5ad2bc5181bfa8cd4599be257c"
        },
        {
          "url": "https://git.kernel.org/stable/c/f1c57f5b16bbc3571bd479c290996c4d4e1fb931"
        },
        {
          "url": "https://git.kernel.org/stable/c/4bcb371019097d0e357f097902587401c509bbc9"
        },
        {
          "url": "https://git.kernel.org/stable/c/fc4fd0281ac80b5a3c5a2330f688f0f9d2a420b6"
        },
        {
          "url": "https://git.kernel.org/stable/c/aa5e44b29ffe4eaa08cc2237fd65bc2596bc023e"
        }
      ],
      "title": "autofs: fix sbi-\u003epipe file reference leak in autofs_kill_sb()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98553",
    "datePublished": "2026-10-18T15:18:20.728Z",
    "dateReserved": "2026-09-25T10:25:14.356Z",
    "dateUpdated": "2026-10-19T09:21:36.247Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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