ghsa-5w9h-9qj2-g754
Vulnerability from github
Published
2024-12-28 12:30
Modified
2025-10-07 21:31
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:

drm/vc4: hdmi: Avoid hang with debug registers when suspended

Trying to read /sys/kernel/debug/dri/1/hdmi1_regs when the hdmi is disconnected results in a fatal system hang.

This is due to the pm suspend code disabling the dvp clock. That is just a gate of the 108MHz clock in DVP_HT_RPI_MISC_CONFIG, which results in accesses hanging AXI bus.

Protect against this.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-56683"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-12-28T10:15:10Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vc4: hdmi: Avoid hang with debug registers when suspended\n\nTrying to read /sys/kernel/debug/dri/1/hdmi1_regs\nwhen the hdmi is disconnected results in a fatal system hang.\n\nThis is due to the pm suspend code disabling the dvp clock.\nThat is just a gate of the 108MHz clock in DVP_HT_RPI_MISC_CONFIG,\nwhich results in accesses hanging AXI bus.\n\nProtect against this.",
  "id": "GHSA-5w9h-9qj2-g754",
  "modified": "2025-10-07T21:31:03Z",
  "published": "2024-12-28T12:30:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-56683"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0ea29bd7d9400d3629683244d609358ed1b12075"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/16f351adf733a182224ad24916d7673aa6df02df"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/223ee2567a55e4f80315c768d2969e6a3b9fb23d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/74f21be9990a42dc2357bcf87a13e16c6998b90e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c7d474974954d9af7e0092021223d58f2de128df"
    }
  ],
  "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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