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CVE-2025-21743 (GCVE-0-2025-21743)

Vulnerability from cvelistv5 – Published: 2025-02-27 02:12 – Updated: 2026-05-11 21:05
VLAI
Title
usbnet: ipheth: fix possible overflow in DPE length check
Summary
In the Linux kernel, the following vulnerability has been resolved: usbnet: ipheth: fix possible overflow in DPE length check Originally, it was possible for the DPE length check to overflow if wDatagramIndex + wDatagramLength > U16_MAX. This could lead to an OoB read. Move the wDatagramIndex term to the other side of the inequality. An existing condition ensures that wDatagramIndex < urb->actual_length.
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:31 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: a2d274c62e44b1995c170595db3865c6fe701226 , < 18bf6f5cce3172cb303c3f0551aa9443d5ed74f8 (git)
Affected: a2d274c62e44b1995c170595db3865c6fe701226 , < d677e7dd59ad6837496f5a02d8e5d39824278dfd (git)
Affected: a2d274c62e44b1995c170595db3865c6fe701226 , < d824a964185910e317287f034c0a439c08b4fe49 (git)
Affected: a2d274c62e44b1995c170595db3865c6fe701226 , < c219427ed296f94bb4b91d08626776dc7719ee27 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.5
Unaffected: 0 , < 6.5 (semver)
Unaffected: 6.6.78 , ≤ 6.6.* (semver)
Unaffected: 6.12.14 , ≤ 6.12.* (semver)
Unaffected: 6.13.3 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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                  "version": "a2d274c62e44b1995c170595db3865c6fe701226",
                  "versionType": "git"
                },
                {
                  "lessThan": "d824a964185910e317287f034c0a439c08b4fe49",
                  "status": "affected",
                  "version": "a2d274c62e44b1995c170595db3865c6fe701226",
                  "versionType": "git"
                },
                {
                  "lessThan": "c219427ed296f94bb4b91d08626776dc7719ee27",
                  "status": "affected",
                  "version": "a2d274c62e44b1995c170595db3865c6fe701226",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/net/usb/ipheth.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "6.5"
                },
                {
                  "lessThan": "6.5",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.78",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.12.*",
                  "status": "unaffected",
                  "version": "6.12.14",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.13.*",
                  "status": "unaffected",
                  "version": "6.13.3",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.14",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.78",
                      "versionStartIncluding": "6.5",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.12.14",
                      "versionStartIncluding": "6.5",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.13.3",
                      "versionStartIncluding": "6.5",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.14",
                      "versionStartIncluding": "6.5",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusbnet: ipheth: fix possible overflow in DPE length check\n\nOriginally, it was possible for the DPE length check to overflow if\nwDatagramIndex + wDatagramLength \u003e U16_MAX. This could lead to an OoB\nread.\n\nMove the wDatagramIndex term to the other side of the inequality.\n\nAn existing condition ensures that wDatagramIndex \u003c urb-\u003eactual_length."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-11T21:05:34.092Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/18bf6f5cce3172cb303c3f0551aa9443d5ed74f8"
            },
            {
              "url": "https://git.kernel.org/stable/c/d677e7dd59ad6837496f5a02d8e5d39824278dfd"
            },
            {
              "url": "https://git.kernel.org/stable/c/d824a964185910e317287f034c0a439c08b4fe49"
            },
            {
              "url": "https://git.kernel.org/stable/c/c219427ed296f94bb4b91d08626776dc7719ee27"
            }
          ],
          "title": "usbnet: ipheth: fix possible overflow in DPE length check",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2025-21743",
        "datePublished": "2025-02-27T02:12:16.696Z",
        "dateReserved": "2024-12-29T08:45:45.757Z",
        "dateUpdated": "2026-05-11T21:05:34.092Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.