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

Vulnerability from cvelistv5 – Published: 2025-12-16 14:44 – Updated: 2026-01-11 16:29
VLAI?
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 ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < d129dc2a5d59b4d9cd2cc0b6eeb04df8461199f0 (git)
Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < 34620eb602aa432f090b2b784ee5c5070fb16cf9 (git)
Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < 61871c83259a511980ec2664964cecc69005398b (git)
Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < 25411f5fcf5743131158f337c99c2bbf3f8477f5 (git)
Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < e841d8ea722315b781c4fc5bf4f7670fbca88875 (git)
Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < 6ef0e1c10455927867cac8f0ed6b49f328f8cf95 (git)
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    Linux Linux Affected: 4.12
Unaffected: 0 , < 4.12 (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-rc1 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/staging/rtl8723bs/core/rtw_mlme_ext.c"
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              "status": "unaffected",
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              "versionType": "semver"
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              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.1",
              "versionType": "semver"
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            {
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              "status": "unaffected",
              "version": "6.19-rc1",
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            }
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        }
      ],
      "cpeApplicability": [
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          "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."
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      "providerMetadata": {
        "dateUpdated": "2026-01-11T16:29:29.777Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "cveId": "CVE-2025-68255",
    "datePublished": "2025-12-16T14:44:58.031Z",
    "dateReserved": "2025-12-16T13:41:40.267Z",
    "dateUpdated": "2026-01-11T16:29:29.777Z",
    "state": "PUBLISHED"
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  }
}


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  • 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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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