ghsa-85h7-g6vm-p392
Vulnerability from github
Published
2024-05-21 15:31
Modified
2024-12-23 18:30
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:

ACPI: fix NULL pointer dereference

Commit 71f642833284 ("ACPI: utils: Fix reference counting in for_each_acpi_dev_match()") started doing "acpi_dev_put()" on a pointer that was possibly NULL. That fails miserably, because that helper inline function is not set up to handle that case.

Just make acpi_dev_put() silently accept a NULL pointer, rather than calling down to put_device() with an invalid offset off that NULL pointer.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47289"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-21T15:15:16Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: fix NULL pointer dereference\n\nCommit 71f642833284 (\"ACPI: utils: Fix reference counting in\nfor_each_acpi_dev_match()\") started doing \"acpi_dev_put()\" on a pointer\nthat was possibly NULL.  That fails miserably, because that helper\ninline function is not set up to handle that case.\n\nJust make acpi_dev_put() silently accept a NULL pointer, rather than\ncalling down to put_device() with an invalid offset off that NULL\npointer.",
  "id": "GHSA-85h7-g6vm-p392",
  "modified": "2024-12-23T18:30:47Z",
  "published": "2024-05-21T15:31:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47289"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/38f54217b423c0101d03a00feec6fb8ec608b12e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cae3fa3d8165761f3000f523b11cfa1cd35206bc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ccf23a0888077a25a0793a746c3941db2a7562e4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fc68f42aa737dc15e7665a4101d4168aadb8e4c4"
    }
  ],
  "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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