ghsa-3x67-44wh-mrgf
Vulnerability from github
Published
2025-05-20 18:30
Modified
2025-11-10 21:30
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix use-after-free in kerberos authentication

Setting sess->user = NULL was introduced to fix the dangling pointer created by ksmbd_free_user. However, it is possible another thread could be operating on the session and make use of sess->user after it has been passed to ksmbd_free_user but before sess->user is set to NULL.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-37924"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-20T16:15:29Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix use-after-free in kerberos authentication\n\nSetting sess-\u003euser = NULL was introduced to fix the dangling pointer\ncreated by ksmbd_free_user. However, it is possible another thread could\nbe operating on the session and make use of sess-\u003euser after it has been\npassed to ksmbd_free_user but before sess-\u003euser is set to NULL.",
  "id": "GHSA-3x67-44wh-mrgf",
  "modified": "2025-11-10T21:30:30Z",
  "published": "2025-05-20T18:30:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37924"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/28c756738af44a404a91b77830d017bb0c525890"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b447463562238428503cfba1c913261047772f90"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e18c616718018dfc440e4a2d2b94e28fe91b1861"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e34a33d5d7e87399af0a138bb32f6a3e95dd83d2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e86e9134e1d1c90a960dd57f59ce574d27b9a124"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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