CVE-2025-40093 (GCVE-0-2025-40093)

Vulnerability from cvelistv5 – Published: 2025-10-30 09:48 – Updated: 2025-12-01 06:17
VLAI?
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: da741b8c56d612b5dd26ffa31341911a5fea23ee , < d3745aaef19198d0c81637a7dd50ef53c4f879b7 (git)
Affected: da741b8c56d612b5dd26ffa31341911a5fea23ee , < 070f341d86cf2c098d63e484a86c7c1d2696a868 (git)
Affected: da741b8c56d612b5dd26ffa31341911a5fea23ee , < 15b9faf53ba8719700596e7ef78879ce200e8c2e (git)
Affected: da741b8c56d612b5dd26ffa31341911a5fea23ee , < 4630c68bade82f087eaaab22e9a361da2f18d139 (git)
Affected: da741b8c56d612b5dd26ffa31341911a5fea23ee , < 42988380ac67c76bb9dff8f77d7ef3eefd50b7b5 (git)
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    Linux Linux Affected: 2.6.27
Unaffected: 0 , < 2.6.27 (semver)
Unaffected: 6.1.158 , ≤ 6.1.* (semver)
Unaffected: 6.6.114 , ≤ 6.6.* (semver)
Unaffected: 6.12.55 , ≤ 6.12.* (semver)
Unaffected: 6.17.5 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/gadget/function/f_ecm.c"
          ],
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          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "2.6.27"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "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"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "2.6.27",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-01T06:17:52.614Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d3745aaef19198d0c81637a7dd50ef53c4f879b7"
        },
        {
          "url": "https://git.kernel.org/stable/c/070f341d86cf2c098d63e484a86c7c1d2696a868"
        },
        {
          "url": "https://git.kernel.org/stable/c/15b9faf53ba8719700596e7ef78879ce200e8c2e"
        },
        {
          "url": "https://git.kernel.org/stable/c/4630c68bade82f087eaaab22e9a361da2f18d139"
        },
        {
          "url": "https://git.kernel.org/stable/c/42988380ac67c76bb9dff8f77d7ef3eefd50b7b5"
        }
      ],
      "title": "usb: gadget: f_ecm: Refactor bind path to use __free()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40093",
    "datePublished": "2025-10-30T09:48:00.807Z",
    "dateReserved": "2025-04-16T07:20:57.163Z",
    "dateUpdated": "2025-12-01T06:17:52.614Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-40093\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-30T10:15:33.813\",\"lastModified\":\"2025-10-30T15:03:13.440\",\"vulnStatus\":\"Awaiting Analysis\",\"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.\"}],\"metrics\":{},\"references\":[{\"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\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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