ghsa-6grj-9h9x-cv46
Vulnerability from github
Published
2025-02-27 03:33
Modified
2025-10-23 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: Cleanup global '__scm' on probe failures

If SCM driver fails the probe, it should not leave global '__scm' variable assigned, because external users of this driver will assume the probe finished successfully. For example TZMEM parts ('__scm->mempool') are initialized later in the probe, but users of it (__scm_smc_call()) rely on the '__scm' variable.

This fixes theoretical NULL pointer exception, triggered via introducing probe deferral in SCM driver with call trace:

qcom_tzmem_alloc+0x70/0x1ac (P) qcom_tzmem_alloc+0x64/0x1ac (L) qcom_scm_assign_mem+0x78/0x194 qcom_rmtfs_mem_probe+0x2d4/0x38c platform_probe+0x68/0xc8

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{
  "affected": [],
  "aliases": [
    "CVE-2024-57985"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-27T02:15:11Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: qcom: scm: Cleanup global \u0027__scm\u0027 on probe failures\n\nIf SCM driver fails the probe, it should not leave global \u0027__scm\u0027\nvariable assigned, because external users of this driver will assume the\nprobe finished successfully.  For example TZMEM parts (\u0027__scm-\u003emempool\u0027)\nare initialized later in the probe, but users of it (__scm_smc_call())\nrely on the \u0027__scm\u0027 variable.\n\nThis fixes theoretical NULL pointer exception, triggered via introducing\nprobe deferral in SCM driver with call trace:\n\n  qcom_tzmem_alloc+0x70/0x1ac (P)\n  qcom_tzmem_alloc+0x64/0x1ac (L)\n  qcom_scm_assign_mem+0x78/0x194\n  qcom_rmtfs_mem_probe+0x2d4/0x38c\n  platform_probe+0x68/0xc8",
  "id": "GHSA-6grj-9h9x-cv46",
  "modified": "2025-10-23T18:31:06Z",
  "published": "2025-02-27T03:33:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-57985"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1e76b546e6fca7eb568161f408133904ca6bcf4f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/390d3baeba51a126f75c97b90ec28b9384ce4b84"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/faf1715798fe72b79e4432ce8c6d03ca69765425"
    }
  ],
  "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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