CVE-2025-68255 (GCVE-0-2025-68255)
Vulnerability from cvelistv5
Published
2025-12-16 14:44
Modified
2026-08-05 12:10
Severity ?
8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 554c0a3abf216c991c5ebddcdb2c08689ecd290b
Version: 554c0a3abf216c991c5ebddcdb2c08689ecd290b
Version: 554c0a3abf216c991c5ebddcdb2c08689ecd290b
Version: 554c0a3abf216c991c5ebddcdb2c08689ecd290b
Version: 554c0a3abf216c991c5ebddcdb2c08689ecd290b
Version: 554c0a3abf216c991c5ebddcdb2c08689ecd290b
Version: 554c0a3abf216c991c5ebddcdb2c08689ecd290b
Version: 554c0a3abf216c991c5ebddcdb2c08689ecd290b
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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",
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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"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "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"
            },
            {
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              "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": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.248",
                  "versionStartIncluding": "4.12",
                  "vulnerable": true
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.198",
                  "versionStartIncluding": "4.12",
                  "vulnerable": true
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                {
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                  "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": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "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"
      }
    }
  },
  "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"
}


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