fkie_nvd - fkie_cve-2025-38657

fkie_cve-2025-38657

Vulnerability from fkie_nvd

Published

2025-08-22 16:15

Modified

2025-08-22 18:08

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: mcc: prevent shift wrapping in rtw89_core_mlsr_switch() The "link_id" value comes from the user via debugfs. If it's larger than BITS_PER_LONG then that would result in shift wrapping and potentially an out of bounds access later. In fact, we can limit it to IEEE80211_MLD_MAX_NUM_LINKS (15). Fortunately, only root can write to debugfs files so the security impact is minimal.

References

▼	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/417cfa9cc44fbe6bceab786f9a4ee5a210f1288e
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/53cf488927a0f79968f9c03c4d1e00d2a79731c3

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw89: mcc: prevent shift wrapping in rtw89_core_mlsr_switch()\n\nThe \"link_id\" value comes from the user via debugfs.  If it\u0027s larger\nthan BITS_PER_LONG then that would result in shift wrapping and\npotentially an out of bounds access later.  In fact, we can limit it\nto IEEE80211_MLD_MAX_NUM_LINKS (15).\n\nFortunately, only root can write to debugfs files so the security\nimpact is minimal."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: rtw89: mcc: impide el ajuste de turnos en rtw89_core_mlsr_switch(). El valor \"link_id\" proviene del usuario a trav\u00e9s de debugfs. Si es mayor que BITS_PER_LONG, esto provocar\u00eda un ajuste de turnos y, potencialmente, un acceso fuera de los l\u00edmites posteriormente. De hecho, podemos limitarlo a IEEE80211_MLD_MAX_NUM_LINKS (15). Afortunadamente, solo el usuario root puede escribir en archivos de debugfs, por lo que el impacto en la seguridad es m\u00ednimo."
    }
  ],
  "id": "CVE-2025-38657",
  "lastModified": "2025-08-22T18:08:51.663",
  "metrics": {},
  "published": "2025-08-22T16:15:40.777",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/417cfa9cc44fbe6bceab786f9a4ee5a210f1288e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/53cf488927a0f79968f9c03c4d1e00d2a79731c3"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

CVE-2025-38657 (GCVE-0-2025-38657)

Vulnerability from cvelistv5

Published

2025-08-22 16:01

Modified

2025-08-22 16:01

Severity ?

Summary

References

▼	URL	Tags
	https://git.kernel.org/stable/c/417cfa9cc44fbe6bceab786f9a4ee5a210f1288e
	https://git.kernel.org/stable/c/53cf488927a0f79968f9c03c4d1e00d2a79731c3

Impacted products

Vendor

Product

Version

▼

Linux

Version: 9dd85e739ce0765f022014c3e0713e1007d7ef60
Version: 9dd85e739ce0765f022014c3e0713e1007d7ef60

Linux

Version: 6.16

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/realtek/rtw89/core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "417cfa9cc44fbe6bceab786f9a4ee5a210f1288e",
              "status": "affected",
              "version": "9dd85e739ce0765f022014c3e0713e1007d7ef60",
              "versionType": "git"
            },
            {
              "lessThan": "53cf488927a0f79968f9c03c4d1e00d2a79731c3",
              "status": "affected",
              "version": "9dd85e739ce0765f022014c3e0713e1007d7ef60",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/realtek/rtw89/core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.16"
            },
            {
              "lessThan": "6.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.16.*",
              "status": "unaffected",
              "version": "6.16.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.17-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16.1",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17-rc1",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw89: mcc: prevent shift wrapping in rtw89_core_mlsr_switch()\n\nThe \"link_id\" value comes from the user via debugfs.  If it\u0027s larger\nthan BITS_PER_LONG then that would result in shift wrapping and\npotentially an out of bounds access later.  In fact, we can limit it\nto IEEE80211_MLD_MAX_NUM_LINKS (15).\n\nFortunately, only root can write to debugfs files so the security\nimpact is minimal."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-08-22T16:01:00.512Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/417cfa9cc44fbe6bceab786f9a4ee5a210f1288e"
        },
        {
          "url": "https://git.kernel.org/stable/c/53cf488927a0f79968f9c03c4d1e00d2a79731c3"
        }
      ],
      "title": "wifi: rtw89: mcc: prevent shift wrapping in rtw89_core_mlsr_switch()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38657",
    "datePublished": "2025-08-22T16:01:00.512Z",
    "dateReserved": "2025-04-16T04:51:24.030Z",
    "dateUpdated": "2025-08-22T16:01:00.512Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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