ghsa-wg5x-3j3h-vr62
Vulnerability from github
Published
2024-08-21 09:31
Modified
2024-09-11 18:31
Severity ?
4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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

drm/virtio: Fix GEM handle creation UAF

Userspace can guess the handle value and try to race GEM object creation with handle close, resulting in a use-after-free if we dereference the object after dropping the handle's reference. For that reason, dropping the handle's reference must be done after we are done dereferencing the object.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-48899"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-08-21T07:15:05Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/virtio: Fix GEM handle creation UAF\n\nUserspace can guess the handle value and try to race GEM object creation\nwith handle close, resulting in a use-after-free if we dereference the\nobject after dropping the handle\u0027s reference.  For that reason, dropping\nthe handle\u0027s reference must be done *after* we are done dereferencing\nthe object.",
  "id": "GHSA-wg5x-3j3h-vr62",
  "modified": "2024-09-11T18:31:02Z",
  "published": "2024-08-21T09:31:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48899"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/011ecdbcd520c90c344b872ca6b4821f7783b2f8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/19ec87d06acfab2313ee82b2a689bf0c154e57ea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/52531258318ed59a2dc5a43df2eaf0eb1d65438e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/68bcd063857075d2f9edfed6024387ac377923e2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/adc48e5e408afbb01d261bd303fd9fbbbaa3e317"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d01d6d2b06c0d8390adf8f3ba08aa60b5642ef73"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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