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CVE-2025-40314 (GCVE-0-2025-40314)

Vulnerability from cvelistv5 – Published: 2025-12-08 00:46 – Updated: 2026-05-11 21:46
VLAI
Title
usb: cdns3: gadget: Use-after-free during failed initialization and exit of cdnsp gadget
Summary
In 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").
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8bc1901ca7b07d864fca11461b3875b31f949765 , < 0cf9a50af91fbdac3849f8d950e883a3eaa3ecea (git)
Affected: 8bc1901ca7b07d864fca11461b3875b31f949765 , < 37158ce6ba964b62d1e3eebd11f03c6900a52dd1 (git)
Affected: 8bc1901ca7b07d864fca11461b3875b31f949765 , < ea37884097a0931abb8e11e40eacfb25e9fdb5e9 (git)
Affected: 8bc1901ca7b07d864fca11461b3875b31f949765 , < 9c52f01429c377a2d32cafc977465f37b5384f77 (git)
Affected: 8bc1901ca7b07d864fca11461b3875b31f949765 , < fdf573c517627a96f5040f988e9b21267806be5c (git)
Affected: 8bc1901ca7b07d864fca11461b3875b31f949765 , < 87c5ff5615dc0a37167e8faf3adeeddc6f1344a3 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.3
Unaffected: 0 , < 5.3 (semver)
Unaffected: 5.15.197 , ≤ 5.15.* (semver)
Unaffected: 6.1.159 , ≤ 6.1.* (semver)
Unaffected: 6.6.117 , ≤ 6.6.* (semver)
Unaffected: 6.12.58 , ≤ 6.12.* (semver)
Unaffected: 6.17.8 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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{
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          "product": "Linux",
          "programFiles": [
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.17.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
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        }
      ],
      "cpeApplicability": [
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      "descriptions": [
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          "lang": "en",
          "value": "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\")."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:46:57.519Z",
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        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/37158ce6ba964b62d1e3eebd11f03c6900a52dd1"
        },
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        {
          "url": "https://git.kernel.org/stable/c/87c5ff5615dc0a37167e8faf3adeeddc6f1344a3"
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      ],
      "title": "usb: cdns3: gadget: Use-after-free during failed initialization and exit of cdnsp gadget",
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  "cveMetadata": {
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    "datePublished": "2025-12-08T00:46:40.576Z",
    "dateReserved": "2025-04-16T07:20:57.185Z",
    "dateUpdated": "2026-05-11T21:46:57.519Z",
    "state": "PUBLISHED"
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      "date": "2026-09-20",
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            "value": "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": "CVE-2025-40314",
        "lastModified": "2026-06-17T09:21:38.627",
        "metrics": {},
        "published": "2025-12-08T01:16:03.877",
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        "vulnStatus": "Deferred"
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    },
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:15:13+00:00",
      "cve": "CVE-2025-40314",
      "id": "CVE-2025-40314",
      "initial_release_date": "2025-12-08T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: usb: cdns3: gadget: Use-after-free during failed initialization and exit of cdnsp gadget",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-40314.json",
      "version": "3"
    },
    "suse_vex": {
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      "current_release_date": "2026-09-19T02:05:33Z",
      "cve": "CVE-2025-40314",
      "id": "CVE-2025-40314",
      "initial_release_date": "2025-12-09T00:24:18Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "522",
      "product_status:known_not_affected": "273",
      "product_status:recommended": "384",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-40314",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-40314.json",
      "version": "37"
    }
  }
}



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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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