CVE-2026-93085firmware: arm_scmi: Reject out of range DT protocol IDs
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 before 8eb2ab209570526728b35e39c4aecdb5099fbaf7; from 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 before 5142fd31bd8c9aff9bad4f6e0cc20e9574f2cee1; from 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 before e66756313d1b4eadd13f39a0aee9fc8773d4d375; 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 builds before 0b6e59eb885f985a5ea7beed385adfa9412b324d; from 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 before 59407ccb52130f2c81f4b3cbe4f14114afceb54f | CNA record |
References
- https://git.kernel.org/stable/c/8eb2ab209570526728b35e39c4aecdb5099fbaf7
- https://git.kernel.org/stable/c/5142fd31bd8c9aff9bad4f6e0cc20e9574f2cee1
- https://git.kernel.org/stable/c/e66756313d1b4eadd13f39a0aee9fc8773d4d375
- https://git.kernel.org/stable/c/0b6e59eb885f985a5ea7beed385adfa9412b324d
- https://git.kernel.org/stable/c/59407ccb52130f2c81f4b3cbe4f14114afceb54f
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.