CVE-2026-93085
kernel: firmware: arm_scmi: Reject out of range DT protocol IDs
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 17, 2026
Updated · October 20, 2026
Description
A flaw was found in the ARM System Control and Management Interface (SCMI) firmware within the Linux kernel. This vulnerability occurs because the system fails to properly reject out-of-range Device Tree (DT) protocol identifiers. A local attacker could exploit this by providing a malformed 32-bit DT reg value, causing the system to truncate and misinterpret the protocol ID. This misinterpretation could lead to a security bypass or unintended behavior in SCMI protocol handling.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-190 · Integer Overflow or Wraparound