ghsa-9925-237c-wgf7
Vulnerability from github
Published
2025-02-27 21:32
Modified
2025-02-27 21:32
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:

ASoC: rt5645: Fix errorenous cleanup order

There is a logic error when removing rt5645 device as the function rt5645_i2c_remove() first cancel the &rt5645->jack_detect_work and delete the &rt5645->btn_check_timer latter. However, since the timer handler rt5645_btn_check_callback() will re-queue the jack_detect_work, this cleanup order is buggy.

That is, once the del_timer_sync in rt5645_i2c_remove is concurrently run with the rt5645_btn_check_callback, the canceled jack_detect_work will be rescheduled again, leading to possible use-after-free.

This patch fix the issue by placing the del_timer_sync function before the cancel_delayed_work_sync.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49493"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:25Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: rt5645: Fix errorenous cleanup order\n\nThere is a logic error when removing rt5645 device as the function\nrt5645_i2c_remove() first cancel the \u0026rt5645-\u003ejack_detect_work and\ndelete the \u0026rt5645-\u003ebtn_check_timer latter. However, since the timer\nhandler rt5645_btn_check_callback() will re-queue the jack_detect_work,\nthis cleanup order is buggy.\n\nThat is, once the del_timer_sync in rt5645_i2c_remove is concurrently\nrun with the rt5645_btn_check_callback, the canceled jack_detect_work\nwill be rescheduled again, leading to possible use-after-free.\n\nThis patch fix the issue by placing the del_timer_sync function before\nthe cancel_delayed_work_sync.",
  "id": "GHSA-9925-237c-wgf7",
  "modified": "2025-02-27T21:32:14Z",
  "published": "2025-02-27T21:32:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49493"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/061a6159cea583f1155f67d1915917a6b9282662"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0941150100173d4eaf3fe08ff4b16740e7c3026f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1a5a3dfd9f172dcb115072f0aea5e27d3083c20e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/236d29c5857f02e0a53fdf15d3dce1536c4322ce"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2def44d3aec59e38d2701c568d65540783f90f2f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/453f0920ffc1a28e28ddb9c3cd5562472b2895b0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7d801e807536a9a9c2146c5f4a5836f154517ed3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/88c09e4812d72c3153afc8e5a45ecac2d0eae3ff"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/abe7554da62cb489712a54de69ef5665c250e564"
    }
  ],
  "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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