GHSA-38HV-9295-2CXW

Vulnerability from github – Published: 2026-08-28 09:31 – Updated: 2026-08-29 09:30
VLAI
Details

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

hwmon: (asus_atk0110) Check package count before accessing element

atk_ec_present() walks the management group package returned by the GGRP ACPI method and, for each sub-package, reads its first element:

id = &obj->package.elements[0];
if (id->type != ACPI_TYPE_INTEGER)

without checking that the sub-package is non-empty. ACPICA allocates the element array with exactly package.count entries, so for a sub-package with a zero count this reads past the allocation.

The sibling function atk_debugfs_ggrp_open() performs the same access but skips empty packages with a package.count check first. Add the same check to atk_ec_present() so a malformed firmware package cannot trigger an out-of-bounds read.

Severity
8.4 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2026-80593"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-28T08:16:42Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (asus_atk0110) Check package count before accessing element\n\natk_ec_present() walks the management group package returned by the GGRP\nACPI method and, for each sub-package, reads its first element:\n\n\tid = \u0026obj-\u003epackage.elements[0];\n\tif (id-\u003etype != ACPI_TYPE_INTEGER)\n\nwithout checking that the sub-package is non-empty.  ACPICA allocates the\nelement array with exactly package.count entries, so for a sub-package\nwith a zero count this reads past the allocation.\n\nThe sibling function atk_debugfs_ggrp_open() performs the same access but\nskips empty packages with a package.count check first.  Add the same\ncheck to atk_ec_present() so a malformed firmware package cannot trigger\nan out-of-bounds read.",
  "id": "GHSA-38hv-9295-2cxw",
  "modified": "2026-08-29T09:30:25Z",
  "published": "2026-08-28T09:31:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80593"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2a137124664aad1e36d8d74e8e2207365a04737f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/459b0a0439ea65b2b612aa572eb62a2e26d05618"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/76392d35c8df471b288cfc6536bd092b3c8ee2cf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/768f20e7bb48d723b82cb142120263d0806fbeb8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/981a8a2e3773dc7e704943388a1fb97970b23275"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b770fcfcdced569bcf7c6982aeea8c3d11a21c2b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d8d4fa0c4f818e30b6f6737bdd989b7e2b511cae"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e2735b39f044bad7bf2017aef248935525bc0b97"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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