Race condition in Linux kernel - CVE-2026-89599

Vulnerability details

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.

Affected software

How to mitigate CVE-2026-89599

External 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

Related Security Bulletins

• Race condition in Linux kernel omapfb displays driver