SB20260912186 - Race condition in Linux kernel omapfb displays driver

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2026-89599)

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 dsicm callback to use an uninitialized mutex.

The vulnerability exists due to a race condition in the dsicm_probe() function of the panel-dsi-cm display driver when a consumer reaches a dsicm callback after the display is registered but before ddata->lock is initialized. A local user can trigger a dsicm callback during this interval to cause a dsicm callback to use an uninitialized mutex.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/09db79078f25c048cfb5d7849795c70415ab8574
• https://git.kernel.org/stable/c/2c3f8c9c995db185284b079f39177e85b2258176
• https://git.kernel.org/stable/c/76818e81cfcae33b09b739de09162c7d8d89bf0b
• https://git.kernel.org/stable/c/f8e43fe0f22b7137ce456e6fe3581d3098174f74