CVE-2025-68255 (GCVE-0-2025-68255)
Vulnerability from cvelistv5 – Published: 2025-12-16 14:44 – Updated: 2026-08-05 12:10
VLAI
EPSS
VEX
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)
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| 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) |
guessed | |
| 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) |
guessed |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/staging/rtl8723bs/core/rtw_mlme_ext.c"
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"vendor": "Linux",
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"version": "4.12"
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{
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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"
},
{
"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": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.248",
"versionStartIncluding": "4.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.198",
"versionStartIncluding": "4.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.160",
"versionStartIncluding": "4.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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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
},
{
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}
],
"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",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2025-68255",
"date": "2026-09-20",
"epss": "0.00369",
"percentile": "0.30702"
},
"microsoft_vex": {
"current_release_date": "2026-01-08T14:45:20.000Z",
"cve": "CVE-2025-68255",
"id": "msrc_CVE-2025-68255",
"initial_release_date": "2025-12-02T00:00:00.000Z",
"product_status:known_not_affected": "2",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "staging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing",
"url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-68255.json",
"version": "3"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
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"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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},
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"versionType": "git"
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{
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"versionType": "git"
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"versionType": "git"
},
{
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"versionType": "git"
},
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"status": "affected",
"version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
"versionType": "git"
}
]
},
{
"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": [
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"version": "4.12"
},
{
"lessThan": "4.12",
"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"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.62",
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},
{
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"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"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"cveTags": [],
"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."
}
],
"id": "CVE-2025-68255",
"lastModified": "2026-07-30T06:24:35.063",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 5.9,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
}
]
},
"published": "2025-12-16T15:15:54.880",
"references": [
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"url": "https://git.kernel.org/stable/c/25411f5fcf5743131158f337c99c2bbf3f8477f5"
},
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"url": "https://git.kernel.org/stable/c/34620eb602aa432f090b2b784ee5c5070fb16cf9"
},
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},
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"url": "https://git.kernel.org/stable/c/49b7806851f93fd342838c93f4f765e0cc5029b0"
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{
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"url": "https://git.kernel.org/stable/c/6ef0e1c10455927867cac8f0ed6b49f328f8cf95"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/d129dc2a5d59b4d9cd2cc0b6eeb04df8461199f0"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/e841d8ea722315b781c4fc5bf4f7670fbca88875"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Deferred"
}
},
"redhat_vex": {
"aggregate_severity": "Important",
"current_release_date": "2026-08-13T17:36:30+00:00",
"cve": "CVE-2025-68255",
"id": "CVE-2025-68255",
"initial_release_date": "2025-12-16T00:00:00+00:00",
"product_status:known_not_affected": "274",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: Linux kernel: Stack buffer overflow in rtl8723bs Wi-Fi driver",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68255.json",
"version": "3"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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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.
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.
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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.
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