CVE-2025-39675

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> drm/amd/display: Add null pointer check in mod_hdcp_hdcp1_create_session()<br /> <br /> The function mod_hdcp_hdcp1_create_session() calls the function<br /> get_first_active_display(), but does not check its return value.<br /> The return value is a null pointer if the display list is empty.<br /> This will lead to a null pointer dereference.<br /> <br /> Add a null pointer check for get_first_active_display() and return<br /> MOD_HDCP_STATUS_DISPLAY_NOT_FOUND if the function return null.<br /> <br /> This is similar to the commit c3e9826a2202<br /> ("drm/amd/display: Add null pointer check for get_first_active_display()").<br /> <br /> (cherry picked from commit 5e43eb3cd731649c4f8b9134f857be62a416c893)