firmware: arm_scmi: Reject out of range DT protocol IDs
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.
CVE-2026-93085
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-93085
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
"lessThan": "8eb2ab209570526728b35e39c4aecdb5099fbaf7",
"versionType": "git"
},
{
"status": "affected",
"version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
"lessThan": "5142fd31bd8c9aff9bad4f6e0cc20e9574f2cee1",
"versionType": "git"
},
{
"status": "affected",
"version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
"lessThan": "e66756313d1b4eadd13f39a0aee9fc8773d4d375",
"versionType": "git"
},
{
"status": "affected",
"version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
"lessThan": "0b6e59eb885f985a5ea7beed385adfa9412b324d",
"versionType": "git"
},
{
"status": "affected",
"version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
"lessThan": "59407ccb52130f2c81f4b3cbe4f14114afceb54f",
"versionType": "git"
}
],
"programFiles": [
"drivers/firmware/arm_scmi/driver.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.3"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/firmware/arm_scmi/driver.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93085
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #37817 · Revision 1
- Added to Heist Feed
- Publisher date