ghsa-fv42-492h-89pj
Vulnerability from github
Published
2024-07-18 09:30
Modified
2024-09-06 15:32
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details

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

drm/amdkfd: don't allow mapping the MMIO HDP page with large pages

We don't get the right offset in that case. The GPU has an unused 4K area of the register BAR space into which you can remap registers. We remap the HDP flush registers into this space to allow userspace (CPU or GPU) to flush the HDP when it updates VRAM. However, on systems with >4K pages, we end up exposing PAGE_SIZE of MMIO space.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-41011"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-682"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-07-18T07:15:02Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: don\u0027t allow mapping the MMIO HDP page with large pages\n\nWe don\u0027t get the right offset in that case.  The GPU has\nan unused 4K area of the register BAR space into which you can\nremap registers.  We remap the HDP flush registers into this\nspace to allow userspace (CPU or GPU) to flush the HDP when it\nupdates VRAM.  However, on systems with \u003e4K pages, we end up\nexposing PAGE_SIZE of MMIO space.",
  "id": "GHSA-fv42-492h-89pj",
  "modified": "2024-09-06T15:32:55Z",
  "published": "2024-07-18T09:30:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-41011"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/009c4d78bcf07c4ac2e3dd9f275b4eaa72b4f884"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4b4cff994a27ebf7bd3fb9a798a1cdfa8d01b724"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6186c93560889265bfe0914609c274eff40bbeb5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/89fffbdf535ce659c1a26b51ad62070566e33b28"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8ad4838040e5515939c071a0f511ce2661a0889d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/be4a2a81b6b90d1a47eaeaace4cc8e2cb57b96c7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f7276cdc1912325b64c33fcb1361952c06e55f63"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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