Vulnerability-Lookup

GHSA-PRQ3-3CX6-VRJ4

Vulnerability from github – Published: 2025-12-16 15:30 – Updated: 2026-07-30 06:32

Details

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

staging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing

The Supported Rates IE length from an incoming Association Request frame was used directly as the memcpy() length when copying into a fixed-size 16-byte stack buffer (supportRate). A malicious station can advertise an IE length larger than 16 bytes, causing a stack buffer overflow.

Clamp ie_len to the buffer size before copying the Supported Rates IE, and correct the bounds check when merging Extended Supported Rates to prevent a second potential overflow.

This prevents kernel stack corruption triggered by malformed association requests.

Severity

8.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2025-68255"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-16T15:15:54Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing\n\nThe Supported Rates IE length from an incoming Association Request frame\nwas used directly as the memcpy() length when copying into a fixed-size\n16-byte stack buffer (supportRate). A malicious station can advertise an\nIE length larger than 16 bytes, causing a stack buffer overflow.\n\nClamp ie_len to the buffer size before copying the Supported Rates IE,\nand correct the bounds check when merging Extended Supported Rates to\nprevent a second potential overflow.\n\nThis prevents kernel stack corruption triggered by malformed association\nrequests.",
  "id": "GHSA-prq3-3cx6-vrj4",
  "modified": "2026-07-30T06:32:24Z",
  "published": "2025-12-16T15:30:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68255"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/25411f5fcf5743131158f337c99c2bbf3f8477f5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/34620eb602aa432f090b2b784ee5c5070fb16cf9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4445adedae770037078803d1ce41f9e88a1944b6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/49b7806851f93fd342838c93f4f765e0cc5029b0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/61871c83259a511980ec2664964cecc69005398b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6ef0e1c10455927867cac8f0ed6b49f328f8cf95"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d129dc2a5d59b4d9cd2cc0b6eeb04df8461199f0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e841d8ea722315b781c4fc5bf4f7670fbca88875"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-68255 (GCVE-0-2025-68255)

Vulnerability from cvelistv5 – Published: 2025-12-16 14:44 – Updated: 2026-08-05 12:10

Title

staging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing

Summary

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing The Supported Rates IE length from an incoming Association Request frame was used directly as the memcpy() length when copying into a fixed-size 16-byte stack buffer (supportRate). A malicious station can advertise an IE length larger than 16 bytes, causing a stack buffer overflow. Clamp ie_len to the buffer size before copying the Supported Rates IE, and correct the bounds check when merging Extended Supported Rates to prevent a second potential overflow. This prevents kernel stack corruption triggered by malformed association requests.

Severity

8.8 (High)


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

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/49b7806851f93fd34…
https://git.kernel.org/stable/c/4445adedae7700370…
https://git.kernel.org/stable/c/d129dc2a5d59b4d9c…
https://git.kernel.org/stable/c/34620eb602aa432f0…
https://git.kernel.org/stable/c/61871c83259a51198…
https://git.kernel.org/stable/c/25411f5fcf5743131…
https://git.kernel.org/stable/c/e841d8ea722315b78…
https://git.kernel.org/stable/c/6ef0e1c1045592786…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < 49b7806851f93fd342838c93f4f765e0cc5029b0 (git) Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < 4445adedae770037078803d1ce41f9e88a1944b6 (git) Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < d129dc2a5d59b4d9cd2cc0b6eeb04df8461199f0 (git) Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < 34620eb602aa432f090b2b784ee5c5070fb16cf9 (git) Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < 61871c83259a511980ec2664964cecc69005398b (git) Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < 25411f5fcf5743131158f337c99c2bbf3f8477f5 (git) Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < e841d8ea722315b781c4fc5bf4f7670fbca88875 (git) Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < 6ef0e1c10455927867cac8f0ed6b49f328f8cf95 (git)
Linux	Linux	Affected: 4.12 Unaffected: 0 , < 4.12 (semver) Unaffected: 5.10.248 , ≤ 5.10.* (semver) Unaffected: 5.15.198 , ≤ 5.15.* (semver) Unaffected: 6.1.160 , ≤ 6.1.* (semver) Unaffected: 6.6.120 , ≤ 6.6.* (semver) Unaffected: 6.12.62 , ≤ 6.12.* (semver) Unaffected: 6.17.12 , ≤ 6.17.* (semver) Unaffected: 6.18.1 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/staging/rtl8723bs/core/rtw_mlme_ext.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "49b7806851f93fd342838c93f4f765e0cc5029b0",
              "status": "affected",
              "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
              "versionType": "git"
            },
            {
              "lessThan": "4445adedae770037078803d1ce41f9e88a1944b6",
              "status": "affected",
              "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
              "versionType": "git"
            },
            {
              "lessThan": "d129dc2a5d59b4d9cd2cc0b6eeb04df8461199f0",
              "status": "affected",
              "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
              "versionType": "git"
            },
            {
              "lessThan": "34620eb602aa432f090b2b784ee5c5070fb16cf9",
              "status": "affected",
              "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
              "versionType": "git"
            },
            {
              "lessThan": "61871c83259a511980ec2664964cecc69005398b",
              "status": "affected",
              "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
              "versionType": "git"
            },
            {
              "lessThan": "25411f5fcf5743131158f337c99c2bbf3f8477f5",
              "status": "affected",
              "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
              "versionType": "git"
            },
            {
              "lessThan": "e841d8ea722315b781c4fc5bf4f7670fbca88875",
              "status": "affected",
              "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
              "versionType": "git"
            },
            {
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              "versionType": "git"
            }
          ]
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          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.12"
            },
            {
              "lessThan": "4.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.248",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.198",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.62",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
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                },
                {
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                  "versionStartIncluding": "4.12",
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                },
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
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                {
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.12",
                  "versionStartIncluding": "4.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.1",
                  "versionStartIncluding": "4.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19",
                  "versionStartIncluding": "4.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing\n\nThe Supported Rates IE length from an incoming Association Request frame\nwas used directly as the memcpy() length when copying into a fixed-size\n16-byte stack buffer (supportRate). A malicious station can advertise an\nIE length larger than 16 bytes, causing a stack buffer overflow.\n\nClamp ie_len to the buffer size before copying the Supported Rates IE,\nand correct the bounds check when merging Extended Supported Rates to\nprevent a second potential overflow.\n\nThis prevents kernel stack corruption triggered by malformed association\nrequests."
        }
      ],
      "metrics": [
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - A nearby station can send a crafted 802.11 Association or Reassociation Request through the rtl8723bs AP receive path; dependence on Wi-Fi radio range and channel makes this Adjacent.\nAC:L - The attacker controls the authentication exchange and malformed IE contents, with no race or uncontrollable condition required. Oversized copies deterministically corrupt the stack or trigger hardening checks.\nPR:N - Open System authentication creates the required station state without credentials. The overflow occurs before WPA/RSN credential proof or the four-way handshake.\nUI:N - Once the device is operating as an access point, receiving the malicious frames requires no victim action.\nS:U - The vulnerable driver and the compromised kernel resources belong to the same operating-system security authority.\nC:H - The attacker-controlled overwrite can reach saved return state, enabling control-flow hijacking and arbitrary kernel-memory disclosure in a successful exploit.\nI:H - The copies can write hundreds of attacker-controlled bytes beyond the stack array and reach return state, supporting kernel code execution and arbitrary modification.\nA:H - The overflow corrupts the stack canary or triggers fortify checks, causing a kernel panic or fatal fault, and an attacker can repeat it after recovery."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:10:30.152Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/49b7806851f93fd342838c93f4f765e0cc5029b0"
        },
        {
          "url": "https://git.kernel.org/stable/c/4445adedae770037078803d1ce41f9e88a1944b6"
        },
        {
          "url": "https://git.kernel.org/stable/c/d129dc2a5d59b4d9cd2cc0b6eeb04df8461199f0"
        },
        {
          "url": "https://git.kernel.org/stable/c/34620eb602aa432f090b2b784ee5c5070fb16cf9"
        },
        {
          "url": "https://git.kernel.org/stable/c/61871c83259a511980ec2664964cecc69005398b"
        },
        {
          "url": "https://git.kernel.org/stable/c/25411f5fcf5743131158f337c99c2bbf3f8477f5"
        },
        {
          "url": "https://git.kernel.org/stable/c/e841d8ea722315b781c4fc5bf4f7670fbca88875"
        },
        {
          "url": "https://git.kernel.org/stable/c/6ef0e1c10455927867cac8f0ed6b49f328f8cf95"
        }
      ],
      "title": "staging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68255",
    "datePublished": "2025-12-16T14:44:58.031Z",
    "dateReserved": "2025-12-16T13:41:40.267Z",
    "dateUpdated": "2026-08-05T12:10:30.152Z",
    "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.