ghsa-rh24-q2xr-hfgm
Vulnerability from github
Published
2024-05-21 18:31
Modified
2025-11-04 00:30
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:

gfs2: Fix slab-use-after-free in gfs2_qd_dealloc

In gfs2_put_super(), whether withdrawn or not, the quota should be cleaned up by gfs2_quota_cleanup().

Otherwise, struct gfs2_sbd will be freed before gfs2_qd_dealloc (rcu callback) has run for all gfs2_quota_data objects, resulting in use-after-free.

Also, gfs2_destroy_threads() and gfs2_quota_cleanup() is already called by gfs2_make_fs_ro(), so in gfs2_put_super(), after calling gfs2_make_fs_ro(), there is no need to call them again.

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{
  "affected": [],
  "aliases": [
    "CVE-2023-52760"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-21T16:15:15Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ngfs2: Fix slab-use-after-free in gfs2_qd_dealloc\n\nIn gfs2_put_super(), whether withdrawn or not, the quota should\nbe cleaned up by gfs2_quota_cleanup().\n\nOtherwise, struct gfs2_sbd will be freed before gfs2_qd_dealloc (rcu\ncallback) has run for all gfs2_quota_data objects, resulting in\nuse-after-free.\n\nAlso, gfs2_destroy_threads() and gfs2_quota_cleanup() is already called\nby gfs2_make_fs_ro(), so in gfs2_put_super(), after calling\ngfs2_make_fs_ro(), there is no need to call them again.",
  "id": "GHSA-rh24-q2xr-hfgm",
  "modified": "2025-11-04T00:30:49Z",
  "published": "2024-05-21T18:31:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52760"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/08a28272faa750d4357ea2cb48d2baefd778ea81"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ad4e0a4f61c57c3ca291ee010a9d677d0199fba"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bdcb8aa434c6d36b5c215d02a9ef07551be25a37"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.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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