SB2025072760 - Improper locking in Linux kernel firmware arm_ffa driver
Published: July 27, 2025
Security Bulletin ID
SB2025072760
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) Improper locking (CVE-ID: CVE-2025-38388)
CWE-ID: CWE-667 - Improper Locking
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 improper locking within the DECLARE_HASHTABLE(), ffa_notify_relinquish(), ffa_notify_request(), handle_notif_callbacks() and ffa_notifications_setup() functions in drivers/firmware/arm_ffa/driver.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.