GHSA-2938-5HF8-58M3

Vulnerability from github – Published: 2024-07-12 15:31 – Updated: 2025-11-04 00:30
VLAI
Details

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

ima: Fix use-after-free on a dentry's dname.name

->d_name.name can change on rename and the earlier value can be freed; there are conditions sufficient to stabilize it (->d_lock on dentry, ->d_lock on its parent, ->i_rwsem exclusive on the parent's inode, rename_lock), but none of those are met at any of the sites. Take a stable snapshot of the name instead.

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2024-39494"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-07-12T13:15:12Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nima: Fix use-after-free on a dentry\u0027s dname.name\n\n-\u003ed_name.name can change on rename and the earlier value can be freed;\nthere are conditions sufficient to stabilize it (-\u003ed_lock on dentry,\n-\u003ed_lock on its parent, -\u003ei_rwsem exclusive on the parent\u0027s inode,\nrename_lock), but none of those are met at any of the sites. Take a stable\nsnapshot of the name instead.",
  "id": "GHSA-2938-5hf8-58m3",
  "modified": "2025-11-04T00:30:51Z",
  "published": "2024-07-12T15:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-39494"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0b31e28fbd773aefb6164687e0767319b8199829"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/480afcbeb7aaaa22677d3dd48ec590b441eaac1a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7fb374981e31c193b1152ed8d3b0a95b671330d4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a78a6f0da57d058e2009e9958fdcef66f165208c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/be84f32bb2c981ca670922e047cdde1488b233de"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dd431c3ac1fc34a9268580dd59ad3e3c76b32a8c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/edf287bc610b18d7a9c0c0c1cb2e97b9348c71bb"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.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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