smb: client: fix possible double free in smb2_set_ea()

{
  "id": "9c7909204a453ab3d20e8db41625a36d0e0161c86cb309edc02748ccc15ba7e1",
  "url": "https://osv.dev/vulnerability/CVE-2024-50152",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "smb: client: fix possible double free in smb2_set_ea()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: smb: client: fix possible double free in smb2_set_ea() Clang static checker(scan-build) warning： fs/smb/client/smb2ops.c:1304:2: Attempt to free released memory. 1304 | kfree(ea); | ^~~~~~~~~ There is a double free in such case: 'ea is initialized to NULL' -> 'first successful memory allocation for ea' -> 'something failed, goto sea_exit' -> 'first memory release for ea' -> 'goto replay_again' -> 'second goto sea_exit before allocate memory for ea' -> 'second memory release for ea resulted in double free'. Re-initialie 'ea' to NULL near to the replay_again label, it can fix this double free problem.",
    "evidence": "osv:CVE-2024-50152",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.6.59",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.11.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "CVE-2024-50152",
      "aliases": [
        "CVE-2024-50152"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
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                  "fixed": "b1813c220b76f60b1727984794377c4aa849d4c1"
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
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                {
                  "fixed": "c9f758ecf2562dfdd4adf12c22921b5de8366123"
                },
                {
                  "fixed": "19ebc1e6cab334a8193398d4152deb76019b5d34"
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            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "6.6.32"
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                  "fixed": "6.6.59"
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            "v6.6.57",
            "v6.6.56",
            "v6.6.55",
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            "v6.6.35",
            "v6.6.34",
            "v6.6.33",
            "v6.6.32"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-50152.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "6.6.59"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
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                {
                  "fixed": "6.11.6"
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              ]
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-50152.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.671636217Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/19ebc1e6cab334a8193398d4152deb76019b5d34",
        "https://git.kernel.org/stable/c/b1813c220b76f60b1727984794377c4aa849d4c1",
        "https://git.kernel.org/stable/c/c9f758ecf2562dfdd4adf12c22921b5de8366123",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/50xxx/CVE-2024-50152.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-50152",
        "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/2024/50xxx/CVE-2024-50152.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-50152",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 505009,
  "published_at": "2024-11-07T09:31:28.733+00:00"
}