ghsa-pp84-cm99-pp2q
Vulnerability from github
Published
2024-05-01 06:31
Modified
2024-05-01 06:31
Details

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

usb: dwc3-am62: fix module unload/reload behavior

As runtime PM is enabled, the module can be runtime suspended when .remove() is called.

Do a pm_runtime_get_sync() to make sure module is active before doing any register operations.

Doing a pm_runtime_put_sync() should disable the refclk so no need to disable it again.

Fixes the below warning at module removel.

[ 39.705310] ------------[ cut here ]------------ [ 39.710004] clk:162:3 already disabled [ 39.713941] WARNING: CPU: 0 PID: 921 at drivers/clk/clk.c:1090 clk_core_disable+0xb0/0xb8

We called of_platform_populate() in .probe() so call the cleanup function of_platform_depopulate() in .remove(). Get rid of the now unnnecessary dwc3_ti_remove_core(). Without this, module re-load doesn't work properly.

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{
   affected: [],
   aliases: [
      "CVE-2024-26963",
   ],
   database_specific: {
      cwe_ids: [],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2024-05-01T06:15:12Z",
      severity: null,
   },
   details: "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: dwc3-am62: fix module unload/reload behavior\n\nAs runtime PM is enabled, the module can be runtime\nsuspended when .remove() is called.\n\nDo a pm_runtime_get_sync() to make sure module is active\nbefore doing any register operations.\n\nDoing a pm_runtime_put_sync() should disable the refclk\nso no need to disable it again.\n\nFixes the below warning at module removel.\n\n[   39.705310] ------------[ cut here ]------------\n[   39.710004] clk:162:3 already disabled\n[   39.713941] WARNING: CPU: 0 PID: 921 at drivers/clk/clk.c:1090 clk_core_disable+0xb0/0xb8\n\nWe called of_platform_populate() in .probe() so call the\ncleanup function of_platform_depopulate() in .remove().\nGet rid of the now unnnecessary dwc3_ti_remove_core().\nWithout this, module re-load doesn't work properly.",
   id: "GHSA-pp84-cm99-pp2q",
   modified: "2024-05-01T06:31:42Z",
   published: "2024-05-01T06:31:42Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2024-26963",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/3895780fabd120d0fbd54354014e85207b25687c",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/629b534c42d04f0797980f2d1ed105fdb8906975",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/6661befe41009c210efa2c1bcd16a5cc4cff8a06",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/6c6a45645a2e6a272dfde14eddbb6706de63c25d",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/7dfed9855397d0df4c6f748d1f66547ab3bad766",
      },
   ],
   schema_version: "1.4.0",
   severity: [],
}


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