SB2025120495 - Incorrect calculation in Linux kernel firmware arm_scmi driver
Published: December 4, 2025
Security Bulletin ID
SB2025120495
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Incorrect calculation (CVE-ID: CVE-2025-40226)
CWE-ID: CWE-682 - Incorrect Calculation
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to incorrect calculation within the scmi_xfer_command_acquire(), scmi_handle_notification(), scmi_handle_response(), scmi_wait_for_reply() and do_xfer() functions in drivers/firmware/arm_scmi/driver.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.