firmware: arm_scmi: Reject out of range DT protocol IDs

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-93085
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-17 17:18:02 UTC
Updated2026-09-17 17:18:02 UTC
DescriptionIn 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.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 8eb2ab209570526728b35e39c4aecdb5099fbaf7 git Not specified
CNA Linux Linux affected 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 5142fd31bd8c9aff9bad4f6e0cc20e9574f2cee1 git Not specified
CNA Linux Linux affected 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 e66756313d1b4eadd13f39a0aee9fc8773d4d375 git Not specified
CNA Linux Linux affected 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 0b6e59eb885f985a5ea7beed385adfa9412b324d git Not specified
CNA Linux Linux affected 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 59407ccb52130f2c81f4b3cbe4f14114afceb54f git Not specified
CNA Linux Linux affected 6.3 Not specified
CNA Linux Linux unaffected 6.3 semver Not specified
CNA Linux Linux unaffected 6.6.157 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.110 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.52 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.6 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/5142fd31bd8c9aff9bad4f6e0cc20e9574f2cee1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0b6e59eb885f985a5ea7beed385adfa9412b324d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8eb2ab209570526728b35e39c4aecdb5099fbaf7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/59407ccb52130f2c81f4b3cbe4f14114afceb54f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e66756313d1b4eadd13f39a0aee9fc8773d4d375 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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