CVE-2025-40055 (GCVE-0-2025-40055)

Vulnerability from cvelistv5 – Published: 2025-10-28 11:48 – Updated: 2026-05-11 21:41
VLAI
Title
ocfs2: fix double free in user_cluster_connect()
Summary
In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix double free in user_cluster_connect() user_cluster_disconnect() frees "conn->cc_private" which is "lc" but then the error handling frees "lc" a second time. Set "lc" to NULL on this path to avoid a double free.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6856 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: c994c2ebdbbc391a42f177c8eb7882ebf3f142d8 , < 283333079d96c84baa91f0c62b5e0cbec246b7a2 (git)
Affected: c994c2ebdbbc391a42f177c8eb7882ebf3f142d8 , < f992bc72f681c32a682d474a29c2135a64d4f4e5 (git)
Affected: c994c2ebdbbc391a42f177c8eb7882ebf3f142d8 , < 827c8efa0d1afe817b90f3618afff552e88348d2 (git)
Affected: c994c2ebdbbc391a42f177c8eb7882ebf3f142d8 , < bfe011297ddd2d0cd64752978baaa0c04cd20573 (git)
Affected: c994c2ebdbbc391a42f177c8eb7882ebf3f142d8 , < 7e76fe9dfadbc00364d7523d5a109e9d3e4a7db2 (git)
Affected: c994c2ebdbbc391a42f177c8eb7882ebf3f142d8 , < 694d5b401036a614f8080085a9de6f86ff0742dc (git)
Affected: c994c2ebdbbc391a42f177c8eb7882ebf3f142d8 , < 892f41e12c8689130d552a9eb2b77bafd26484ab (git)
Affected: c994c2ebdbbc391a42f177c8eb7882ebf3f142d8 , < 8f45f089337d924db24397f55697cda0e6960516 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.14
Unaffected: 0 , < 3.14 (semver)
Unaffected: 5.4.301 , ≤ 5.4.* (semver)
Unaffected: 5.10.246 , ≤ 5.10.* (semver)
Unaffected: 5.15.195 , ≤ 5.15.* (semver)
Unaffected: 6.1.156 , ≤ 6.1.* (semver)
Unaffected: 6.6.112 , ≤ 6.6.* (semver)
Unaffected: 6.12.53 , ≤ 6.12.* (semver)
Unaffected: 6.17.3 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix double free in user_cluster_connect()\n\nuser_cluster_disconnect() frees \"conn-\u003ecc_private\" which is \"lc\" but then\nthe error handling frees \"lc\" a second time.  Set \"lc\" to NULL on this\npath to avoid a double free."
        }
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      "providerMetadata": {
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    "datePublished": "2025-10-28T11:48:29.665Z",
    "dateReserved": "2025-04-16T07:20:57.157Z",
    "dateUpdated": "2026-05-11T21:41:36.488Z",
    "state": "PUBLISHED"
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      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "ocfs2: fix double free in user_cluster_connect()",
      "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-40055.json",
      "version": "1"
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          },
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            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nocfs2: correcci\u00f3n de doble liberaci\u00f3n en user_cluster_connect()\n\nuser_cluster_disconnect() libera \u0027conn-\u003ecc_private\u0027, que es \u0027lc\u0027, pero luego el manejo de errores libera \u0027lc\u0027 una segunda vez. Establezca \u0027lc\u0027 a NULL en esta ruta para evitar una doble liberaci\u00f3n."
          }
        ],
        "id": "CVE-2025-40055",
        "lastModified": "2026-10-19T21:10:00.160",
        "metrics": {},
        "published": "2025-10-28T12:15:39.780",
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        "vulnStatus": "Deferred"
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      "current_release_date": "2026-06-30T10:34:13+00:00",
      "cve": "CVE-2025-40055",
      "id": "CVE-2025-40055",
      "initial_release_date": "2025-10-28T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ocfs2: fix double free in user_cluster_connect()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-40055.json",
      "version": "3"
    }
  }
}



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