CVE-2025-40055 (GCVE-0-2025-40055)
Vulnerability from cvelistv5
Published
2025-10-28 11:48
Modified
2025-10-29 13:19
Severity ?
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: c994c2ebdbbc391a42f177c8eb7882ebf3f142d8
Version: c994c2ebdbbc391a42f177c8eb7882ebf3f142d8
Version: c994c2ebdbbc391a42f177c8eb7882ebf3f142d8
Version: c994c2ebdbbc391a42f177c8eb7882ebf3f142d8
Version: c994c2ebdbbc391a42f177c8eb7882ebf3f142d8
Version: c994c2ebdbbc391a42f177c8eb7882ebf3f142d8
Version: c994c2ebdbbc391a42f177c8eb7882ebf3f142d8
Version: c994c2ebdbbc391a42f177c8eb7882ebf3f142d8
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ocfs2/stack_user.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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          "programFiles": [
            "fs/ocfs2/stack_user.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.14"
            },
            {
              "lessThan": "3.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.301",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.246",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.195",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.156",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.301",
                  "versionStartIncluding": "3.14",
                  "vulnerable": true
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-29T13:19:55.237Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/283333079d96c84baa91f0c62b5e0cbec246b7a2"
        },
        {
          "url": "https://git.kernel.org/stable/c/f992bc72f681c32a682d474a29c2135a64d4f4e5"
        },
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          "url": "https://git.kernel.org/stable/c/827c8efa0d1afe817b90f3618afff552e88348d2"
        },
        {
          "url": "https://git.kernel.org/stable/c/bfe011297ddd2d0cd64752978baaa0c04cd20573"
        },
        {
          "url": "https://git.kernel.org/stable/c/7e76fe9dfadbc00364d7523d5a109e9d3e4a7db2"
        },
        {
          "url": "https://git.kernel.org/stable/c/694d5b401036a614f8080085a9de6f86ff0742dc"
        },
        {
          "url": "https://git.kernel.org/stable/c/892f41e12c8689130d552a9eb2b77bafd26484ab"
        },
        {
          "url": "https://git.kernel.org/stable/c/8f45f089337d924db24397f55697cda0e6960516"
        }
      ],
      "title": "ocfs2: fix double free in user_cluster_connect()",
      "x_generator": {
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40055",
    "datePublished": "2025-10-28T11:48:29.665Z",
    "dateReserved": "2025-04-16T07:20:57.157Z",
    "dateUpdated": "2025-10-29T13:19:55.237Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-40055\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-28T12:15:39.780\",\"lastModified\":\"2025-10-30T15:05:32.197\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"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.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/283333079d96c84baa91f0c62b5e0cbec246b7a2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/694d5b401036a614f8080085a9de6f86ff0742dc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7e76fe9dfadbc00364d7523d5a109e9d3e4a7db2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/827c8efa0d1afe817b90f3618afff552e88348d2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/892f41e12c8689130d552a9eb2b77bafd26484ab\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8f45f089337d924db24397f55697cda0e6960516\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bfe011297ddd2d0cd64752978baaa0c04cd20573\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f992bc72f681c32a682d474a29c2135a64d4f4e5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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