ghsa-frcg-wh52-w5v9
Vulnerability from github
Published
2024-06-19 15:30
Modified
2024-08-01 21:31
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:

nilfs2: fix use-after-free of timer for log writer thread

Patch series "nilfs2: fix log writer related issues".

This bug fix series covers three nilfs2 log writer-related issues, including a timer use-after-free issue and potential deadlock issue on unmount, and a potential freeze issue in event synchronization found during their analysis. Details are described in each commit log.

This patch (of 3):

A use-after-free issue has been reported regarding the timer sc_timer on the nilfs_sc_info structure.

The problem is that even though it is used to wake up a sleeping log writer thread, sc_timer is not shut down until the nilfs_sc_info structure is about to be freed, and is used regardless of the thread's lifetime.

Fix this issue by limiting the use of sc_timer only while the log writer thread is alive.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-38583"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-19T14:15:18Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix use-after-free of timer for log writer thread\n\nPatch series \"nilfs2: fix log writer related issues\".\n\nThis bug fix series covers three nilfs2 log writer-related issues,\nincluding a timer use-after-free issue and potential deadlock issue on\nunmount, and a potential freeze issue in event synchronization found\nduring their analysis.  Details are described in each commit log.\n\n\nThis patch (of 3):\n\nA use-after-free issue has been reported regarding the timer sc_timer on\nthe nilfs_sc_info structure.\n\nThe problem is that even though it is used to wake up a sleeping log\nwriter thread, sc_timer is not shut down until the nilfs_sc_info structure\nis about to be freed, and is used regardless of the thread\u0027s lifetime.\n\nFix this issue by limiting the use of sc_timer only while the log writer\nthread is alive.",
  "id": "GHSA-frcg-wh52-w5v9",
  "modified": "2024-08-01T21:31:40Z",
  "published": "2024-06-19T15:30:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-38583"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2f12b2c03c5dae1a0de0a9e5853177e3d6eee3c6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/67fa90d4a2ccd9ebb0e1e168c7d0b5d0cf3c7148"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/68e738be5c518fc3c4e9146b66f67c8fee0135fb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/822ae5a8eac30478578a75f7e064f0584931bf2d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/82933c84f188dcfe89eb26b0b48ab5d1ca99d164"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/86a30d6302deddb9fb97ba6fc4b04d0e870b582a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e65ccf3a4de4f0c763d94789615b83e11f204438"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f5d4e04634c9cf68bdf23de08ada0bb92e8befe7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f9186bba4ea282b07293c1c892441df3a5441cb0"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.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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