Vulnerability-Lookup

GHSA-7FCF-99GR-MJR2

Vulnerability from github – Published: 2025-06-18 12:30 – Updated: 2025-11-13 21:31

Details

In the Linux kernel, the following vulnerability has been resolved:

usb: cdns3 fix use-after-free at workaround 2

BUG: KFENCE: use-after-free read in __list_del_entry_valid+0x10/0xac

cdns3_wa2_remove_old_request() { ... kfree(priv_req->request.buf); cdns3_gadget_ep_free_request(&priv_ep->endpoint, &priv_req->request); list_del_init(&priv_req->list); ^^^ use after free ... }

cdns3_gadget_ep_free_request() free the space pointed by priv_req, but priv_req is used in the following list_del_init().

This patch move list_del_init() before cdns3_gadget_ep_free_request().

Severity

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50034"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-18T11:15:31Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: cdns3 fix use-after-free at workaround 2\n\nBUG: KFENCE: use-after-free read in __list_del_entry_valid+0x10/0xac\n\ncdns3_wa2_remove_old_request()\n{\n\t...\n\tkfree(priv_req-\u003erequest.buf);\n\tcdns3_gadget_ep_free_request(\u0026priv_ep-\u003eendpoint, \u0026priv_req-\u003erequest);\n\tlist_del_init(\u0026priv_req-\u003elist);\n\t^^^ use after free\n\t...\n}\n\ncdns3_gadget_ep_free_request() free the space pointed by priv_req,\nbut priv_req is used in the following list_del_init().\n\nThis patch move list_del_init() before cdns3_gadget_ep_free_request().",
  "id": "GHSA-7fcf-99gr-mjr2",
  "modified": "2025-11-13T21:31:18Z",
  "published": "2025-06-18T12:30:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50034"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6d7ac60098b206d0472475b666cb09d556bec03d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6fd50446e7c9a98b4bcf96815f5c9602a16ea472"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7d602f30149a117eea260208b1661bc404c21dfd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c3c1dbad3a2db32ecf371c97f2058491b8ba0f9a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e65d9b7147d7be3504893ca7dfb85286bda83d40"
    }
  ],
  "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"
    }
  ]
}

CVE-2022-50034 (GCVE-0-2022-50034)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:01 – Updated: 2026-08-15 12:23

Title

usb: cdns3 fix use-after-free at workaround 2

Summary

In the Linux kernel, the following vulnerability has been resolved: usb: cdns3 fix use-after-free at workaround 2 BUG: KFENCE: use-after-free read in __list_del_entry_valid+0x10/0xac cdns3_wa2_remove_old_request() { ... kfree(priv_req->request.buf); cdns3_gadget_ep_free_request(&priv_ep->endpoint, &priv_req->request); list_del_init(&priv_req->list); ^^^ use after free ... } cdns3_gadget_ep_free_request() free the space pointed by priv_req, but priv_req is used in the following list_del_init(). This patch move list_del_init() before cdns3_gadget_ep_free_request().

Severity

No CVSS data available.

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/e65d9b7147d7be350…
https://git.kernel.org/stable/c/6d7ac60098b206d04…
https://git.kernel.org/stable/c/c3c1dbad3a2db32ec…
https://git.kernel.org/stable/c/6fd50446e7c9a98b4…
https://git.kernel.org/stable/c/7d602f30149a117ee…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 6bbf87a131edd39040974f3843ff97e89310ebde , < e65d9b7147d7be3504893ca7dfb85286bda83d40 (git) Affected: 6bbf87a131edd39040974f3843ff97e89310ebde , < 6d7ac60098b206d0472475b666cb09d556bec03d (git) Affected: 6bbf87a131edd39040974f3843ff97e89310ebde , < c3c1dbad3a2db32ecf371c97f2058491b8ba0f9a (git) Affected: 6bbf87a131edd39040974f3843ff97e89310ebde , < 6fd50446e7c9a98b4bcf96815f5c9602a16ea472 (git) Affected: 6bbf87a131edd39040974f3843ff97e89310ebde , < 7d602f30149a117eea260208b1661bc404c21dfd (git)
Linux	Linux	Affected: 5.4 Unaffected: 0 , < 5.4 (semver) Unaffected: 5.4.211 , ≤ 5.4.* (semver) Unaffected: 5.10.138 , ≤ 5.10.* (semver) Unaffected: 5.15.63 , ≤ 5.15.* (semver) Unaffected: 5.19.4 , ≤ 5.19.* (semver) Unaffected: 6.0 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/cdns3/cdns3-gadget.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e65d9b7147d7be3504893ca7dfb85286bda83d40",
              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "6d7ac60098b206d0472475b666cb09d556bec03d",
              "status": "affected",
              "version": "6bbf87a131edd39040974f3843ff97e89310ebde",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "6bbf87a131edd39040974f3843ff97e89310ebde",
              "versionType": "git"
            },
            {
              "lessThan": "6fd50446e7c9a98b4bcf96815f5c9602a16ea472",
              "status": "affected",
              "version": "6bbf87a131edd39040974f3843ff97e89310ebde",
              "versionType": "git"
            },
            {
              "lessThan": "7d602f30149a117eea260208b1661bc404c21dfd",
              "status": "affected",
              "version": "6bbf87a131edd39040974f3843ff97e89310ebde",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/cdns3/cdns3-gadget.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.4"
            },
            {
              "lessThan": "5.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.211",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.138",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.63",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.19.*",
              "status": "unaffected",
              "version": "5.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.211",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.138",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: cdns3 fix use-after-free at workaround 2\n\nBUG: KFENCE: use-after-free read in __list_del_entry_valid+0x10/0xac\n\ncdns3_wa2_remove_old_request()\n{\n\t...\n\tkfree(priv_req-\u003erequest.buf);\n\tcdns3_gadget_ep_free_request(\u0026priv_ep-\u003eendpoint, \u0026priv_req-\u003erequest);\n\tlist_del_init(\u0026priv_req-\u003elist);\n\t^^^ use after free\n\t...\n}\n\ncdns3_gadget_ep_free_request() free the space pointed by priv_req,\nbut priv_req is used in the following list_del_init().\n\nThis patch move list_del_init() before cdns3_gadget_ep_free_request()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-15T12:23:09.956Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e65d9b7147d7be3504893ca7dfb85286bda83d40"
        },
        {
          "url": "https://git.kernel.org/stable/c/6d7ac60098b206d0472475b666cb09d556bec03d"
        },
        {
          "url": "https://git.kernel.org/stable/c/c3c1dbad3a2db32ecf371c97f2058491b8ba0f9a"
        },
        {
          "url": "https://git.kernel.org/stable/c/6fd50446e7c9a98b4bcf96815f5c9602a16ea472"
        },
        {
          "url": "https://git.kernel.org/stable/c/7d602f30149a117eea260208b1661bc404c21dfd"
        }
      ],
      "title": "usb: cdns3 fix use-after-free at workaround 2",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50034",
    "datePublished": "2025-06-18T11:01:36.435Z",
    "dateReserved": "2025-06-18T10:57:27.396Z",
    "dateUpdated": "2026-08-15T12:23:09.956Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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