ghsa-5293-cf37-fxqw
Vulnerability from github
Published
2024-09-13 06:30
Modified
2024-09-13 18:31
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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

firmware: qcom: scm: Mark get_wq_ctx() as atomic call

Currently get_wq_ctx() is wrongly configured as a standard call. When two SMC calls are in sleep and one SMC wakes up, it calls get_wq_ctx() to resume the corresponding sleeping thread. But if get_wq_ctx() is interrupted, goes to sleep and another SMC call is waiting to be allocated a waitq context, it leads to a deadlock.

To avoid this get_wq_ctx() must be an atomic call and can't be a standard SMC call. Hence mark get_wq_ctx() as a fast call.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-46692"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-667"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-09-13T06:15:14Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: qcom: scm: Mark get_wq_ctx() as atomic call\n\nCurrently get_wq_ctx() is wrongly configured as a standard call. When two\nSMC calls are in sleep and one SMC wakes up, it calls get_wq_ctx() to\nresume the corresponding sleeping thread. But if get_wq_ctx() is\ninterrupted, goes to sleep and another SMC call is waiting to be allocated\na waitq context, it leads to a deadlock.\n\nTo avoid this get_wq_ctx() must be an atomic call and can\u0027t be a standard\nSMC call. Hence mark get_wq_ctx() as a fast call.",
  "id": "GHSA-5293-cf37-fxqw",
  "modified": "2024-09-13T18:31:46Z",
  "published": "2024-09-13T06:30:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-46692"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9960085a3a82c58d3323c1c20b991db6045063b0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cdf7efe4b02aa93813db0bf1ca596ad298ab6b06"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e40115c33c0d79c940545b6b12112aace7acd9f5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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