ghsa-xrw7-56rh-2jrq
Vulnerability from github
Published
2024-11-19 03:31
Modified
2024-11-27 00:31
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:

usb: musb: sunxi: Fix accessing an released usb phy

Commit 6ed05c68cbca ("usb: musb: sunxi: Explicitly release USB PHY on exit") will cause that usb phy @glue->xceiv is accessed after released.

1) register platform driver @sunxi_musb_driver // get the usb phy @glue->xceiv sunxi_musb_probe() -> devm_usb_get_phy().

2) register and unregister platform driver @musb_driver musb_probe() -> sunxi_musb_init() use the phy here //the phy is released here musb_remove() -> sunxi_musb_exit() -> devm_usb_put_phy()

3) register @musb_driver again musb_probe() -> sunxi_musb_init() use the phy here but the phy has been released at 2). ...

Fixed by reverting the commit, namely, removing devm_usb_put_phy() from sunxi_musb_exit().

Show details on source website

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{
   affected: [],
   aliases: [
      "CVE-2024-50269",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-416",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2024-11-19T02:16:28Z",
      severity: "HIGH",
   },
   details: "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: musb: sunxi: Fix accessing an released usb phy\n\nCommit 6ed05c68cbca (\"usb: musb: sunxi: Explicitly release USB PHY on\nexit\") will cause that usb phy @glue->xceiv is accessed after released.\n\n1) register platform driver @sunxi_musb_driver\n// get the usb phy @glue->xceiv\nsunxi_musb_probe() -> devm_usb_get_phy().\n\n2) register and unregister platform driver @musb_driver\nmusb_probe() -> sunxi_musb_init()\nuse the phy here\n//the phy is released here\nmusb_remove() -> sunxi_musb_exit() -> devm_usb_put_phy()\n\n3) register @musb_driver again\nmusb_probe() -> sunxi_musb_init()\nuse the phy here but the phy has been released at 2).\n...\n\nFixed by reverting the commit, namely, removing devm_usb_put_phy()\nfrom sunxi_musb_exit().",
   id: "GHSA-xrw7-56rh-2jrq",
   modified: "2024-11-27T00:31:41Z",
   published: "2024-11-19T03:31:07Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2024-50269",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/498dbd9aea205db9da674994b74c7bf8e18448bd",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/4aa77d5ea9944468e16c3eed15e858fd5de44de1",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/63559ba8077cbadae1c92a65b73ea522bf377dd9",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/6e2848d1c8c0139161e69ac0a94133e90e9988e8",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/721ddad945596220c123eb6f7126729fe277ee4f",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/8a30da5aa9609663b3e05bcc91a916537f66a4cd",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/b08baa75b989cf779cbfa0969681f8ba2dc46569",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/ccd811c304d2ee56189bfbc49302cb3c44361893",
      },
   ],
   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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