FKIE_CVE-2025-40093

Vulnerability from fkie_nvd - Published: 2025-10-30 10:15 - Updated: 2026-06-17 09:21
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_ecm: Refactor bind path to use __free() After an bind/unbind cycle, the ecm->notify_req is left stale. If a subsequent bind fails, the unified error label attempts to free this stale request, leading to a NULL pointer dereference when accessing ep->ops->free_request. Refactor the error handling in the bind path to use the __free() automatic cleanup mechanism.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/070f341d86cf2c098d63e484a86c7c1d2696a868
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/15b9faf53ba8719700596e7ef78879ce200e8c2e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/42988380ac67c76bb9dff8f77d7ef3eefd50b7b5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4630c68bade82f087eaaab22e9a361da2f18d139
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d3745aaef19198d0c81637a7dd50ef53c4f879b7
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/gadget/function/f_ecm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d3745aaef19198d0c81637a7dd50ef53c4f879b7",
              "status": "affected",
              "version": "da741b8c56d612b5dd26ffa31341911a5fea23ee",
              "versionType": "git"
            },
            {
              "lessThan": "070f341d86cf2c098d63e484a86c7c1d2696a868",
              "status": "affected",
              "version": "da741b8c56d612b5dd26ffa31341911a5fea23ee",
              "versionType": "git"
            },
            {
              "lessThan": "15b9faf53ba8719700596e7ef78879ce200e8c2e",
              "status": "affected",
              "version": "da741b8c56d612b5dd26ffa31341911a5fea23ee",
              "versionType": "git"
            },
            {
              "lessThan": "4630c68bade82f087eaaab22e9a361da2f18d139",
              "status": "affected",
              "version": "da741b8c56d612b5dd26ffa31341911a5fea23ee",
              "versionType": "git"
            },
            {
              "lessThan": "42988380ac67c76bb9dff8f77d7ef3eefd50b7b5",
              "status": "affected",
              "version": "da741b8c56d612b5dd26ffa31341911a5fea23ee",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/gadget/function/f_ecm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.27"
            },
            {
              "lessThan": "2.6.27",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.114",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.55",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_ecm: Refactor bind path to use __free()\n\nAfter an bind/unbind cycle, the ecm-\u003enotify_req is left stale. If a\nsubsequent bind fails, the unified error label attempts to free this\nstale request, leading to a NULL pointer dereference when accessing\nep-\u003eops-\u003efree_request.\n\nRefactor the error handling in the bind path to use the __free()\nautomatic cleanup mechanism."
    }
  ],
  "id": "CVE-2025-40093",
  "lastModified": "2026-06-17T09:21:15.230",
  "metrics": {},
  "published": "2025-10-30T10:15:33.813",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/070f341d86cf2c098d63e484a86c7c1d2696a868"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/15b9faf53ba8719700596e7ef78879ce200e8c2e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/42988380ac67c76bb9dff8f77d7ef3eefd50b7b5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4630c68bade82f087eaaab22e9a361da2f18d139"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d3745aaef19198d0c81637a7dd50ef53c4f879b7"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}


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