GHSA-5PR8-9989-4XQP
Vulnerability from github – Published: 2025-12-08 03:31 – Updated: 2025-12-08 03:31In the Linux kernel, the following vulnerability has been resolved:
usb: cdns3: gadget: Use-after-free during failed initialization and exit of cdnsp gadget
In the __cdnsp_gadget_init() and cdnsp_gadget_exit() functions, the gadget structure (pdev->gadget) was freed before its endpoints. The endpoints are linked via the ep_list in the gadget structure. Freeing the gadget first leaves dangling pointers in the endpoint list. When the endpoints are subsequently freed, this results in a use-after-free.
Fix: By separating the usb_del_gadget_udc() operation into distinct "del" and "put" steps, cdnsp_gadget_free_endpoints() can be executed prior to the final release of the gadget structure with usb_put_gadget().
A patch similar to bb9c74a5bd14("usb: dwc3: gadget: Free gadget structure only after freeing endpoints").
{
"affected": [],
"aliases": [
"CVE-2025-40314"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-08T01:16:03Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: cdns3: gadget: Use-after-free during failed initialization and exit of cdnsp gadget\n\nIn the __cdnsp_gadget_init() and cdnsp_gadget_exit() functions, the gadget\nstructure (pdev-\u003egadget) was freed before its endpoints.\nThe endpoints are linked via the ep_list in the gadget structure.\nFreeing the gadget first leaves dangling pointers in the endpoint list.\nWhen the endpoints are subsequently freed, this results in a use-after-free.\n\nFix:\nBy separating the usb_del_gadget_udc() operation into distinct \"del\" and\n\"put\" steps, cdnsp_gadget_free_endpoints() can be executed prior to the\nfinal release of the gadget structure with usb_put_gadget().\n\nA patch similar to bb9c74a5bd14(\"usb: dwc3: gadget: Free gadget structure\n only after freeing endpoints\").",
"id": "GHSA-5pr8-9989-4xqp",
"modified": "2025-12-08T03:31:01Z",
"published": "2025-12-08T03:31:01Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40314"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0cf9a50af91fbdac3849f8d950e883a3eaa3ecea"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/37158ce6ba964b62d1e3eebd11f03c6900a52dd1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/87c5ff5615dc0a37167e8faf3adeeddc6f1344a3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9c52f01429c377a2d32cafc977465f37b5384f77"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ea37884097a0931abb8e11e40eacfb25e9fdb5e9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/fdf573c517627a96f5040f988e9b21267806be5c"
}
],
"schema_version": "1.4.0",
"severity": []
}
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