CVE-2025-38630

In the Linux kernel, the following vulnerability has been resolved:

fbdev: imxfb: Check fbaddvideomode to prevent null-ptr-deref

fbaddvideomode() can fail with -ENOMEM when its internal kmalloc() cannot allocate a struct fbmodelist. If that happens, the modelist stays empty but the driver continues to register. Add a check for its return value to prevent poteintial null-ptr-deref, which is similar to the commit 17186f1f90d3 ("fbdev: Fix doregisterframebuffer to prevent null-ptr-deref in fbvideomodetovar").