ghsa-2wwc-57w4-gp7m
Vulnerability from github
Published
2024-02-27 21:31
Modified
2024-04-10 21:30
Severity ?
6.7 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Details

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

ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure

When failing the driver probe because of invalid firmware properties, the GTDT driver unmaps the interrupt that it mapped earlier.

However, it never checks whether the mapping of the interrupt actially succeeded. Even more, should the firmware report an illegal interrupt number that overlaps with the GIC SGI range, this can result in an IPI being unmapped, and subsequent fireworks (as reported by Dann Frazier).

Rework the driver to have a slightly saner behaviour and actually check whether the interrupt has been mapped before unmapping things.

Show details on source website

To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2021-46953"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-02-27T19:04:06Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: GTDT: Don\u0027t corrupt interrupt mappings on watchdow probe failure\n\nWhen failing the driver probe because of invalid firmware properties,\nthe GTDT driver unmaps the interrupt that it mapped earlier.\n\nHowever, it never checks whether the mapping of the interrupt actially\nsucceeded. Even more, should the firmware report an illegal interrupt\nnumber that overlaps with the GIC SGI range, this can result in an\nIPI being unmapped, and subsequent fireworks (as reported by Dann\nFrazier).\n\nRework the driver to have a slightly saner behaviour and actually\ncheck whether the interrupt has been mapped before unmapping things.",
  "id": "GHSA-2wwc-57w4-gp7m",
  "modified": "2024-04-10T21:30:29Z",
  "published": "2024-02-27T21:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-46953"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1ecd5b129252249b9bc03d7645a7bda512747277"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/42e69521ee1fa5abf21f478d147d06bbfe6bf6a8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/504632a3577a049dd9bb7aabae5b4476f9c586b4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/596e079c362ac17ed02aa1b99fdc444d62072a01"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7b2162db1498c71962a4bb2f776fa4e76d4d305b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c3385a9122f8db15b453e07bfc88117fce7f3724"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e0f2d86481eaa83df33b0793f75212919db7a19d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.