FKIE_CVE-2026-74340
Vulnerability from fkie_nvd - Published: 2026-08-15 06:22 - Updated: 2026-08-17 06:19
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
wifi: wcn36xx: fix OOB read from firmware count in PRINT_REG_INFO indication
The firmware-controlled rsp->count field is used as the loop bound for
indexing into the flexible rsp->regs[] array without validation against
the message length. A count exceeding the actual data causes out-of-
bounds reads from the heap-allocated message buffer.
Add a check that count fits within the received message.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/wireless/ath/wcn36xx/smd.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "22b0b8572a64362531dd0ed499b75e16282aeb2b",
"status": "affected",
"version": "43efa3c0f241e04862be8e6a68ff765d36cde1ba",
"versionType": "git"
},
{
"lessThan": "3cf92b44c4fb88a5e8de8733a4494c0956606bca",
"status": "affected",
"version": "43efa3c0f241e04862be8e6a68ff765d36cde1ba",
"versionType": "git"
},
{
"lessThan": "0907c06dccae9e3c8d5a68eb9014beec73a36e79",
"status": "affected",
"version": "43efa3c0f241e04862be8e6a68ff765d36cde1ba",
"versionType": "git"
},
{
"lessThan": "64228dfc4247aca178c01e5a37af7d8dcc7a6089",
"status": "affected",
"version": "43efa3c0f241e04862be8e6a68ff765d36cde1ba",
"versionType": "git"
},
{
"lessThan": "23d210877968657bd07e1a517e0b516db20a1d80",
"status": "affected",
"version": "43efa3c0f241e04862be8e6a68ff765d36cde1ba",
"versionType": "git"
},
{
"lessThan": "f03782f7f41f2afee5076a1ef08ced5649218771",
"status": "affected",
"version": "43efa3c0f241e04862be8e6a68ff765d36cde1ba",
"versionType": "git"
},
{
"lessThan": "f987efff29a5fe45320ea5991c9d5cb98b676953",
"status": "affected",
"version": "43efa3c0f241e04862be8e6a68ff765d36cde1ba",
"versionType": "git"
},
{
"lessThan": "df2187acfca6c6cca372c5d35f42394d9c270b09",
"status": "affected",
"version": "43efa3c0f241e04862be8e6a68ff765d36cde1ba",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/net/wireless/ath/wcn36xx/smd.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.11"
},
{
"lessThan": "4.11",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.261",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.212",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.97",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.40",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"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\nwifi: wcn36xx: fix OOB read from firmware count in PRINT_REG_INFO indication\n\nThe firmware-controlled rsp-\u003ecount field is used as the loop bound for\nindexing into the flexible rsp-\u003eregs[] array without validation against\nthe message length. A count exceeding the actual data causes out-of-\nbounds reads from the heap-allocated message buffer.\n\nAdd a check that count fits within the received message."
}
],
"id": "CVE-2026-74340",
"lastModified": "2026-08-17T06:19:28.467",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 5.2,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
}
]
},
"published": "2026-08-15T06:22:34.987",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/0907c06dccae9e3c8d5a68eb9014beec73a36e79"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/22b0b8572a64362531dd0ed499b75e16282aeb2b"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/23d210877968657bd07e1a517e0b516db20a1d80"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/3cf92b44c4fb88a5e8de8733a4494c0956606bca"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/64228dfc4247aca178c01e5a37af7d8dcc7a6089"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/df2187acfca6c6cca372c5d35f42394d9c270b09"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/f03782f7f41f2afee5076a1ef08ced5649218771"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/f987efff29a5fe45320ea5991c9d5cb98b676953"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
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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.
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.
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