ghsa-5g8p-x9mm-c9vr
Vulnerability from github
Published
2025-04-01 18:30
Modified
2025-11-03 21:33
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 smb2_lock

If smb_lock->zero_len has value, ->llist of smb_lock is not delete and flock is old one. It will cause use-after-free on error handling routine.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-21945"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-04-01T16:15:25Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix use-after-free in smb2_lock\n\nIf smb_lock-\u003ezero_len has value, -\u003ellist of smb_lock is not delete and\nflock is old one. It will cause use-after-free on error handling\nroutine.",
  "id": "GHSA-5g8p-x9mm-c9vr",
  "modified": "2025-11-03T21:33:25Z",
  "published": "2025-04-01T18:30:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21945"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/410ce35a2ed6d0e114132bba29af49b69880c8c7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/636e021646cf9b52ddfea7c809b018e91f2188cb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/84d2d1641b71dec326e8736a749b7ee76a9599fc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8573571060ca466cbef2c6f03306b2cc7b883506"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a0609097fd10d618aed4864038393dd75131289e"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.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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