Vulnerability-Lookup

FKIE_CVE-2025-71100

Vulnerability from fkie_nvd - Published: 2026-01-13 16:16 - Updated: 2026-07-30 06:24

Severity

7.6 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: rtlwifi: 8192cu: fix tid out of range in rtl92cu_tx_fill_desc() TID getting from ieee80211_get_tid() might be out of range of array size of sta_entry->tids[], so check TID is less than MAX_TID_COUNT. Othwerwise, UBSAN warn: UBSAN: array-index-out-of-bounds in drivers/net/wireless/realtek/rtlwifi/rtl8192cu/trx.c:514:30 index 10 is out of range for type 'rtl_tid_data [9]'

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/90a15ff324645aa806d81fa349497cd964861b66	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9765d6eb8298b07d499cdf9ef7c237d3540102d6	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/dd39edb445f07400e748da967a07d5dca5c5f96e	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	6.9
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/realtek/rtlwifi/rtl8192cu/trx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "8ca4cdef93297c9b9bf08da39bc940bd20acbb94",
              "versionType": "git"
            },
            {
              "lessThan": "dd39edb445f07400e748da967a07d5dca5c5f96e",
              "status": "affected",
              "version": "8ca4cdef93297c9b9bf08da39bc940bd20acbb94",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/realtek/rtlwifi/rtl8192cu/trx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.9"
            },
            {
              "lessThan": "6.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.64",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
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              "vulnerable": true
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          "negate": false,
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtlwifi: 8192cu: fix tid out of range in rtl92cu_tx_fill_desc()\n\nTID getting from ieee80211_get_tid() might be out of range of array size\nof sta_entry-\u003etids[], so check TID is less than MAX_TID_COUNT. Othwerwise,\nUBSAN warn:\n\n UBSAN: array-index-out-of-bounds in drivers/net/wireless/realtek/rtlwifi/rtl8192cu/trx.c:514:30\n index 10 is out of range for type \u0027rtl_tid_data [9]\u0027"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad:\n\nwifi: rtlwifi: 8192cu: soluci\u00f3n a tid fuera de rango en rtl92cu_tx_fill_desc()\n\nEl TID obtenido de ieee80211_get_tid() podr\u00eda estar fuera del rango del tama\u00f1o del array de sta_entry-\u0026gt;tids[], por lo tanto, se verifica que el TID sea menor que MAX_TID_COUNT. De lo contrario, UBSAN advierte:\n\n UBSAN: \u00edndice de array fuera de l\u00edmites en drivers/net/wireless/realtek/rtlwifi/rtl8192cu/trx.c:514:30\n el \u00edndice 10 est\u00e1 fuera de rango para el tipo \u0027rtl_tid_data [9]\u0027"
    }
  ],
  "id": "CVE-2025-71100",
  "lastModified": "2026-07-30T06:24:51.197",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.6,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.7,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-01-13T16:16:09.920",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/90a15ff324645aa806d81fa349497cd964861b66"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      ],
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    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-129"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2025-71100 (GCVE-0-2025-71100)

Vulnerability from cvelistv5 – Published: 2026-01-13 15:34 – Updated: 2026-08-05 12:12

Title

wifi: rtlwifi: 8192cu: fix tid out of range in rtl92cu_tx_fill_desc()

Summary

Severity

7.6 (High)


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

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/9765d6eb8298b07d4…
https://git.kernel.org/stable/c/90a15ff324645aa80…
https://git.kernel.org/stable/c/dd39edb445f07400e…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 8ca4cdef93297c9b9bf08da39bc940bd20acbb94 , < 9765d6eb8298b07d499cdf9ef7c237d3540102d6 (git) Affected: 8ca4cdef93297c9b9bf08da39bc940bd20acbb94 , < 90a15ff324645aa806d81fa349497cd964861b66 (git) Affected: 8ca4cdef93297c9b9bf08da39bc940bd20acbb94 , < dd39edb445f07400e748da967a07d5dca5c5f96e (git)
Linux	Linux	Affected: 6.9 Unaffected: 0 , < 6.9 (semver) Unaffected: 6.12.64 , ≤ 6.12.* (semver) Unaffected: 6.18.4 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/realtek/rtlwifi/rtl8192cu/trx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9765d6eb8298b07d499cdf9ef7c237d3540102d6",
              "status": "affected",
              "version": "8ca4cdef93297c9b9bf08da39bc940bd20acbb94",
              "versionType": "git"
            },
            {
              "lessThan": "90a15ff324645aa806d81fa349497cd964861b66",
              "status": "affected",
              "version": "8ca4cdef93297c9b9bf08da39bc940bd20acbb94",
              "versionType": "git"
            },
            {
              "lessThan": "dd39edb445f07400e748da967a07d5dca5c5f96e",
              "status": "affected",
              "version": "8ca4cdef93297c9b9bf08da39bc940bd20acbb94",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/realtek/rtlwifi/rtl8192cu/trx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.9"
            },
            {
              "lessThan": "6.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.64",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtlwifi: 8192cu: fix tid out of range in rtl92cu_tx_fill_desc()\n\nTID getting from ieee80211_get_tid() might be out of range of array size\nof sta_entry-\u003etids[], so check TID is less than MAX_TID_COUNT. Othwerwise,\nUBSAN warn:\n\n UBSAN: array-index-out-of-bounds in drivers/net/wireless/realtek/rtlwifi/rtl8192cu/trx.c:514:30\n index 10 is out of range for type \u0027rtl_tid_data [9]\u0027"
        }
      ],
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - An adjacent Wi-Fi peer can trigger automatic open-mesh peering responses whose category 15 is misinterpreted as a TID, reaching rtl92cu_tx_fill_desc() over the wireless link.\nAC:L - A valid peering-open frame deterministically triggers the vulnerable transmit path; no race or condition outside the attacker\u0027s control is required.\nPR:N - The open-mesh path accepts self-protected peering frames from unknown peers and automatically creates an authorized station entry, requiring no credentials or local capabilities.\nUI:N - Once the affected wireless interface is operating, mac80211 processes the attacker\u0027s frame and transmits the vulnerable response automatically.\nS:U - The access and resulting effects remain within the host kernel and wireless device security authority, without crossing a virtualization or isolation boundary.\nC:L - The access reads one byte at one of a small number of TID-selected offsets, with TIDs 10 through 15 reaching beyond the tail-allocated driver data; conservatively, this permits only a tightly bounded heap-state oracle rather than arbitrary memory disclosure.\nI:L - The operation cannot overwrite kernel memory or provide an arbitrary-write primitive, but the fetched byte can influence aggregation and RTS descriptor state, supporting limited transmission integrity impact.\nA:H - UBSAN trap or panic-on-warning kernels can oops or panic on the deterministic bounds violation, and an adjacent peer can retrigger it after recovery."
            }
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      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:12:05.756Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        },
        {
          "url": "https://git.kernel.org/stable/c/dd39edb445f07400e748da967a07d5dca5c5f96e"
        }
      ],
      "title": "wifi: rtlwifi: 8192cu: fix tid out of range in rtl92cu_tx_fill_desc()",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71100",
    "datePublished": "2026-01-13T15:34:59.039Z",
    "dateReserved": "2026-01-13T15:30:19.651Z",
    "dateUpdated": "2026-08-05T12:12:05.756Z",
    "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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.