SB20260912412 - Race condition in Linux kernel i3c master driver

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2026-80953)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 1.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local privileged user to cause a denial of service.

The vulnerability exists due to a race condition in the ADI I3C master driver's transfer queue lock initialization when handling a pending CMDR interrupt during driver initialization. A local privileged user can trigger a pending CMDR interrupt before the transfer queue lock is initialized to cause a denial of service.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/8a53f9102a0d3eeb8784999f925028acf339c276
• https://git.kernel.org/stable/c/a15a1b95de980362c14f32f519b293b0d12ce86f
• https://git.kernel.org/stable/c/de8c32b0a246bbb4b44ec29e12769496a0bf66f7