CVE-2026-93183

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

drm/lima: call drm_mm_init() with a valid allocation range

lima_vm_create() is currently run before va_start and va_end are set up,

meaning they are both 0. lima_vm_create() runs drm_mm_init() with them

as arguments for the allocator, and if DRM_DEBUG_MM is enabled the

DRM_MM_BUG_ON check in drm_mm_init then fires, as seen here on

exynos4412-odroid-u2:

[ 1.736297] ------------[ cut here ]------------

[ 1.740370] kernel BUG at drivers/gpu/drm/drm_mm.c:931!

[ 1.745574] Internal error: Oops - BUG: 0 [#1] SMP ARM

[ 1.750697] Modules linked in:

[ 1.753734] CPU: 0 UID: 0 PID: 41 Comm: kworker/u16:1 Not tainted 7.0.10-postmarketos-exynos4 #11 PREEMPT

[ 1.763372] Hardware name: Samsung Exynos (Flattened Device Tree)

[ 1.769446] Workqueue: events_unbound deferred_probe_work_func

[ 1.775261] PC is at drm_mm_init+0x9c/0xa4

[ 1.779339] LR is at lima_vm_create+0x144/0x17c

[ ... ]

Fix the issue by moving the lima_vm_create() call after va_start and

va_end are set up.