CVE-2026-93085 (GCVE-0-2026-93085)
Vulnerability from cvelistv5 – Published: 2026-09-17 16:11 – Updated: 2026-09-17 16:11
VLAI
EPSS
VEX
Title
firmware: arm_scmi: Reject out of range DT protocol IDs
Summary
In the Linux kernel, the following vulnerability has been resolved:
firmware: arm_scmi: Reject out of range DT protocol IDs
SCMI protocol IDs carried in message headers are limited by
MSG_PROTOCOL_ID_MASK. The DT parsing paths noticed protocol IDs
outside that range, but only logged an error and then kept processing
the invalid value.
That lets a malformed 32-bit DT reg value reach helpers which take a u8
protocol ID, where it can be truncated and/or treated as a different
protocol.
For channel setup, two different out-of-range values can also be used as
distinct IDR keys while aliasing the generated SCMI protocol identity.
Skip DT protocol nodes whose reg value does not fit the SCMI protocol ID
field before setting up channels or creating protocol devices.
Severity
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 , < 8eb2ab209570526728b35e39c4aecdb5099fbaf7
(git)
Affected: 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 , < 5142fd31bd8c9aff9bad4f6e0cc20e9574f2cee1 (git) Affected: 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 , < e66756313d1b4eadd13f39a0aee9fc8773d4d375 (git) Affected: 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 , < 0b6e59eb885f985a5ea7beed385adfa9412b324d (git) Affected: 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 , < 59407ccb52130f2c81f4b3cbe4f14114afceb54f (git) |
guessed | |
| Linux | Linux |
Affected:
6.3
Unaffected: 0 , < 6.3 (semver) Unaffected: 6.6.157 , ≤ 6.6.* (semver) Unaffected: 6.12.110 , ≤ 6.12.* (semver) Unaffected: 6.18.52 , ≤ 6.18.* (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/firmware/arm_scmi/driver.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "8eb2ab209570526728b35e39c4aecdb5099fbaf7",
"status": "affected",
"version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
"versionType": "git"
},
{
"lessThan": "5142fd31bd8c9aff9bad4f6e0cc20e9574f2cee1",
"status": "affected",
"version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
"versionType": "git"
},
{
"lessThan": "e66756313d1b4eadd13f39a0aee9fc8773d4d375",
"status": "affected",
"version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
"versionType": "git"
},
{
"lessThan": "0b6e59eb885f985a5ea7beed385adfa9412b324d",
"status": "affected",
"version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
"versionType": "git"
},
{
"lessThan": "59407ccb52130f2c81f4b3cbe4f14114afceb54f",
"status": "affected",
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"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/firmware/arm_scmi/driver.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.3"
},
{
"lessThan": "6.3",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.3-rc1",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.157",
"versionStartIncluding": "6.3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.110",
"versionStartIncluding": "6.3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.52",
"versionStartIncluding": "6.3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2.6",
"versionStartIncluding": "6.3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.3-rc1",
"versionStartIncluding": "6.3",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Reject out of range DT protocol IDs\n\nSCMI protocol IDs carried in message headers are limited by\nMSG_PROTOCOL_ID_MASK. The DT parsing paths noticed protocol IDs\noutside that range, but only logged an error and then kept processing\nthe invalid value.\n\nThat lets a malformed 32-bit DT reg value reach helpers which take a u8\nprotocol ID, where it can be truncated and/or treated as a different\nprotocol.\n\nFor channel setup, two different out-of-range values can also be used as\ndistinct IDR keys while aliasing the generated SCMI protocol identity.\n\nSkip DT protocol nodes whose reg value does not fit the SCMI protocol ID\nfield before setting up channels or creating protocol devices."
}
],
"providerMetadata": {
"dateUpdated": "2026-09-17T16:11:04.355Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/8eb2ab209570526728b35e39c4aecdb5099fbaf7"
},
{
"url": "https://git.kernel.org/stable/c/5142fd31bd8c9aff9bad4f6e0cc20e9574f2cee1"
},
{
"url": "https://git.kernel.org/stable/c/e66756313d1b4eadd13f39a0aee9fc8773d4d375"
},
{
"url": "https://git.kernel.org/stable/c/0b6e59eb885f985a5ea7beed385adfa9412b324d"
},
{
"url": "https://git.kernel.org/stable/c/59407ccb52130f2c81f4b3cbe4f14114afceb54f"
}
],
"title": "firmware: arm_scmi: Reject out of range DT protocol IDs",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-93085",
"datePublished": "2026-09-17T16:11:04.355Z",
"dateReserved": "2026-09-17T15:57:05.662Z",
"dateUpdated": "2026-09-17T16:11:04.355Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/firmware/arm_scmi/driver.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "8eb2ab209570526728b35e39c4aecdb5099fbaf7",
"status": "affected",
"version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
"versionType": "git"
},
{
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"status": "affected",
"version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
"versionType": "git"
},
{
"lessThan": "e66756313d1b4eadd13f39a0aee9fc8773d4d375",
"status": "affected",
"version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
"versionType": "git"
},
{
"lessThan": "0b6e59eb885f985a5ea7beed385adfa9412b324d",
"status": "affected",
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"versionType": "git"
},
{
"lessThan": "59407ccb52130f2c81f4b3cbe4f14114afceb54f",
"status": "affected",
"version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/firmware/arm_scmi/driver.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.3"
},
{
"lessThan": "6.3",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.3-rc1",
"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\nfirmware: arm_scmi: Reject out of range DT protocol IDs\n\nSCMI protocol IDs carried in message headers are limited by\nMSG_PROTOCOL_ID_MASK. The DT parsing paths noticed protocol IDs\noutside that range, but only logged an error and then kept processing\nthe invalid value.\n\nThat lets a malformed 32-bit DT reg value reach helpers which take a u8\nprotocol ID, where it can be truncated and/or treated as a different\nprotocol.\n\nFor channel setup, two different out-of-range values can also be used as\ndistinct IDR keys while aliasing the generated SCMI protocol identity.\n\nSkip DT protocol nodes whose reg value does not fit the SCMI protocol ID\nfield before setting up channels or creating protocol devices."
}
],
"id": "CVE-2026-93085",
"lastModified": "2026-09-17T17:18:02.590",
"metrics": {},
"published": "2026-09-17T17:18:02.590",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/0b6e59eb885f985a5ea7beed385adfa9412b324d"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/5142fd31bd8c9aff9bad4f6e0cc20e9574f2cee1"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/59407ccb52130f2c81f4b3cbe4f14114afceb54f"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/8eb2ab209570526728b35e39c4aecdb5099fbaf7"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/e66756313d1b4eadd13f39a0aee9fc8773d4d375"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
},
"suse_vex": {
"aggregate_severity": "not set",
"current_release_date": "2026-09-18T00:12:24Z",
"cve": "CVE-2026-93085",
"id": "CVE-2026-93085",
"initial_release_date": "2026-09-18T00:12:24Z",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-93085",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-93085.json",
"version": "2"
}
}
}
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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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