SB20260918119 - Race condition in Linux kernel firmware arm_scmi driver
Published: September 18, 2026
Security Bulletin ID
SB20260918119
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Race condition (CVE-ID: CVE-2026-93092)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: 0 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a race condition in the SCMI driver.
The vulnerability exists due to improper synchronization in requested-devices notifier handling when a SCMI device is being removed. A local user can cause a requested-devices notifier callback to race with active_protocols IDR teardown to cause a race condition in the SCMI driver.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/492fb49eac24beecd6d3c5e4744a513e626f8dcf
- https://git.kernel.org/stable/c/66a0bbf30cc14140fe13f63cd594a7c1ee352b75
- https://git.kernel.org/stable/c/70a26b37389846f1f29a09f7983aa3f45feff529
- https://git.kernel.org/stable/c/74fcaa0a3f7ad3edfde2e8c6cb8ae457a00e0b7a
- https://git.kernel.org/stable/c/f5e528f631425416f9b39e9d8b385c9f1ceb40d6