CVE-2024-45015

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

drm/msm/dpu: move dpuencoder's connector assignment to atomicenable()

For cases where the crtc's connectorschanged was set without enable/active getting toggled , there is an atomicenable() call followed by an atomicdisable() but without an atomicmode_set().

This results in a NULL ptr access for the dpuencodergetdrmfmt() call in the atomicenable() as the dpuencoder's connector was cleared in the atomicdisable() but not re-assigned as there was no atomicmode_set() call.

Fix the NULL ptr access by moving the assignment for atomicenable() and also use drmatomicgetnewconnectorforencoder() to get the connector from the atomicstate.

Patchwork: https://patchwork.freedesktop.org/patch/606729/